Trichocereus angelesii, also known as Echinopsis angelesii or Echinopsis angelesiae, was originally described by Friedrich Ritter as a white flowering variety ofTrichocereus strigosus / Trichocereus strigonus, until Kiesling publicized it under the name Trichocereus angelesii.
Check out two photos of Trichocereus strigonus in comparison
The flower of Trichocereus angelesii
The flower of Echinopsis angelesii is white and 12-24 centimeters long. Trichocereus angelesii is a day flowering / diurnal species with clear visual similarity to Trichocereus strigonus. The spines, fruits and seeds are pretty much indistinguishable from the ones of Trichocereus strigosus, which makes it nearly impossible to identify the plant unless you find it at the original type location. Trichocereus angelesii, aka Echinopsis angelesii, usually has 14-22 ribs . In comparison to this, Trichocereus huascha has 12-15 ribs.
The typus location is Famatima in the provence La Rioja, what makes it likely that it is synonymous with the commercial name Trichocereus famatinensis. It is also closely related to the plant that Ritter called Trichocereus callianthus. This plant was originally sold by Ritter as FR999, which was still labeled as Trichocereus huascha back then.
Kiesling´s description gives Darwinia in Argentina as the typus location and it´s not clear whether or not those plants were actually the same.
Buy Trichocereus angelesii / Buy seeds of T. angelesii
It´s a rare species that you only get rarely, but classic Kaktus nurseries like Kakteen Haage or Uhlig Kakteen might have some of them available. If you don’t have the chance to collect them at one of the aforementioned locations, you will probably not run into it very oftenly. There are also some older plants that you can find on the commercial market, and these are usually labeled as T. huascha or Trichocereus strigonus. White flowering Trichocereus huascha might very well be a mislabeled Trichocereus angelesii.
Trichocereus glaucus, also known as Echinopsis glauca, is a Peruvian Trichocereus species described by Friedrich Ritter. It might be synonymous with Trichocereus chalaensis, or at least related to it in some form. There are also Peruvianoids that are sold under this name and I occasionally encountered Trichocereus fulvilanus being sold under this name as well. The whole complex is chaotic and it´s hard to verify which plant Ritter´s description was covering.
Trichocereus glaucus – Foto: Friedrich Ritter
Origin of Trichocereus glaucus:
Peru ( South Peru ), Arequipa (Rio Tambo), Chile. In Chile, this plant is closely related to Trichocereus fulvilanus and Trichocereus deserticolus.
Description of Trichocereus glaucus / Echinopsis glauca:
Trichocereus glaucuscan get between 1,5-2 meters tall and is a prostrate/creeping species that you often find hanging down slopes and cliffs. This trait is very distinct in the variety Trichocereus glaucus var. pendens. The color of the skin is very glaucous and small specimens look absolutely like the type of plants that are labeled Trichocereus macrogonus / Echinopsis macrogona today. Spiny, dark blue versions from the complex around T. peruvianus. However, macrogonus grows columnar while this species tends to bend over with age. New growth is very glaucous.
Areoles of Echinopsis glauca:
The areoles are dark brown to gray in color and approximately 2,5 centimeters apart of each other. Similar to other plants related to Trichocereus peruvianus, the plant has a diameter of up to 10 centimeters and the areoles are gray felted. The spines look a bit like the ones on Trichocereus cuzcoensisand old growth has a typical satin white glow that is common on this species. Trichocereus glaucus has 6-9 ribs, 3-6 middle spines and 8-11 radial spines. The middle spines are 5-10 centimeters and the radial spines 1-2 centimeters long. New spine growth is black to brown and turns gray with age.
Flowers of T. glaucus:
White, just like almost every other Trichocereus from this complex. The diameter is very variable and usually is between 15-22 centimeters. Trichocereus glaucus is a night-flowering species with green, round fruits. However, the hairy flowers usually stay open until the next morning.
Fruit of E. glauca:
Round, green, and 3 centimeters thick.
Type locality: Lower part of the Rio Tambo in the department Arequipa.
Trichocereus glaucus is very similar to Trichocereus chalaensisand grows in a similar way. We think that Trichocereus chalaensis might be synonymous with Ritter´s Trichocereus glaucus. Ritter´s field number of Trichocereus glaucus was FR270. We distributed seeds of Trichocereus glaucus various times in the past and all ended up amazingly beautiful. It´s a very nice species.
Buy Trichocereus glaucus seeds:
Trichocereus glaucus aka Echinopsis glauca is extremely rare and most plants on the market will probably come labeled as “Trichocereus peruvianus” or “Trichocereus macrogonus”. It is common occurence for some Peruvian cactus collectors to label all glaucous Trichocereus species with this name. This is obviously wrong and causes chaos. We sometimes have plants of this species in our Trichocereus Facebook group, which can be found here: https://facebook.com/groups/trichocereus
Cultivation of Echinopsis glauca:
Trichocereus glaucus is a very resilient grower and likes to be watered well in summer. In winter, they should be kept as dry as possible at around 10° Celsius. Seed germinates very well and the plant is usually very tough. That´s also caused by its drought tolerance, which is very typical for these kinds of plants. The species will probably tolerate temperatures between -5° to -7° Celsius over very short time, but I would not stress it and this also depends on many other factors, like general health and dryness. I would recommend keeping at no lower than 10° Celsius in winter.
Varieties of E. glauca: Trichocereus glaucus var. pendens. This variety does only grow hanging down cliffs and small hills. This variety only grows at one location in Chile and is extremely rare. This local population is in the south of Arica, Camarca in Chile. Backeberg suggested that this would be his Trichocereus uyumpaensis, but Friedrich Ritter vehemently disagreed with that. More information is necessary about this topic.
Below: Trichocereus Glaucus – Fotos: Auxin
Translation of Ritter´s description (loosely)
This species forms shrubs the size of 1 – 2 meters and often several meters in diameter, sprouting mainly from shoots that lay sideways on the ground. This plant rarely pups from the top or upper parts. The shoots are 5 – 8 inches thick, erect, later lying in the lower parts, the new shoot blue-green, later gray-green.
Ribs: 7-9, very broad, obtuse, 7.5 to 13 mm high, 15-25 mm wide, notched, with transverse furrows that do not reach down to the separating grooves of the ribs, areoles: grey felted, 1/2-3/4 inches in diameter, 1 to 2 inches free removal, let down by the humps in the notches Spines: In the new shoot black to brown, becoming gray, straight, rigid Marginal spines: 7-10, directed laterally, the lower and lateral 8 to 15 mm long, coarse needle-shaped, somewhat flattened, the upper the upper stronger and not sharply separated from the Central spines. Central spines: 3-6, very spread apart, subulate in the middle, but usually closer to the top edge and almost in the position of an edge of spine, below 1.5 mm thick Flower: Not far from the apex, 13 to 19 centimeters long, fragrant, opening in the evening, the morning still open, Ovary: Green with fleshy green, narrowly triangular, 2-5 mm long, pointed scales and large scales raised bases. The flowers are covered with brown/black hairs. Partition against the nectar chamber 3-4 mm thick, tube-shaped, 13 to 23 mm long, to the stylus 1to 2 mm wide, brownish, almost openly, with nectar
In addition funnel shaped, 40-65 mm long, the top 2 to 3 cm wide, pale green interior, exterior gray-green, with triangular points, 7.5 to 10 mm long, dark green scales and tufts of hair as on the ovary. Stamens: white, greenish below, insertions missing on the top 2 to 3 centimeters of the tube to a ring on the hem, pouch pale brown, approximately at half height petals standing Stylus: pale green, white or pale brownish above, 10 to 11 cm in length, with 14 to 18 mm fall on the 13-16 spread pale yellow stigma lobes, between the pouches or outstanding.
German original description / Deutsche Original Beschreibung:
Büsche von 1 meter bis 2 meter höhe und oft mehreren Metern Durchmesser, sprossend hauptsächlich unten von liegenden Trieben, weniger oben sprossend. Triebe 5 bis 8 Zentimeter dick, aufrecht, später in den unteren Teilen liegend, im Neutrieb blaugrün, später mehr graugrün. Rippen: 7-9, sehr breit, stumpf, 7,5 bis 13 mm hoch, 15 bis 25 mm breit, gekerbt, mit Querfurchen, die nicht bis zu den Trennfurchen der Rippen hinabreichen, Areolen: Graufilzig, 1/2-3/4 Zentimeter Durchmesser, 1bis 2 Zentimeter freie Entfernung, , von den Höckern in die Kerben hinabreichend Stacheln: Im Neutrieb schwarz bis braun, , vergrauend, gerade, starr Randstacheln: 7 bis 10, seitlich gerichtet, die unteren und seitlichen 8 bis 15 mm lang, derb nadelförmig, etwas abgeflacht, die oberen die Oberen stärker und nicht scharf von den Mittelstacheln gesondert. Mittelstacheln: 3 bis 6, sehr gespreizt, pfriemlich in der Mitte, aber meist näher dem oberen Rand und fast in der Stellung eines Randstachels, unten 1,5 mm dick Blüte: Nicht weit weg vom Scheitel, 13 bis 19 zentimeter lang, duftend, abends öffnend, morgens noch offen, Fruchtknoten: Grün mit fleischigen grünen, schmal dreieckigen, 2-5 mm langen spitzen Schuppen und großen erhabenen Schuppenbasen. Mit starken schwarzen oder braunschwarzen Wollhaaren. Trennwand gegen die Nektarkammer 3-4 mm dick, diese tubisch, 13 bis 23 mm lang,um den Griffel 1bis 2 mm weit, bräunlich, fast offen, mit Nektar
Röhren: Darüber trichterig, 40 bis 65 mm lang, oben 2 bis 3 cm weit, innen blaß grünlich , außen graugrün, mit dreieckigen Spitzen, 7,5 bis 10 mm langen dunkelgrünen Schuppen und Haarbüscheln wie auf dem Fruchtknoten. Staubfäden: weiß, unten grünlich, Insertionen fehlen auf den obersten 2 bis 3 Zentimetern der Röhre, bis auf einen Ring auf dem Saum, Beutel blassbraun, etwa bei halber Petalen Höhe stehend Griffel: blassgrün, oben weiß oder blass bräunlich, 10 bis 11 cm lang, wovon 14 bis 18 mm auf die 13-16 gespreizten blaßgelben Narbenäste fallen, zwischen den Beuteln oder sie überragend.
Photos of Trichocereus glaucus / Echinopsis glauca
In comparison to this species, check out closely related species:
Trichocereus riomizquensis is a Bolivian Trichocereus species that is closely related to Trichocereus bridgesii. I count it as a close relative and potential regional form of Trichocereus bridgesii, which is only endemic to one site in Bolivia near the Rio Mizque. The species was discovered and described by the German cactus field botanist Friedrich Ritter, who gave Chuyllas as the type locality and described it growing on steep slopes in the province Campero.
His Field Number was FR 856. Friedrich Ritter was one of the leading Cactus experts of his time and successfully ran a seed shop, in which he sold this species as seed to people all over the world. Trichocereus riomizquensis was also visited during the Sacred Succulents Fieldtrips and they found a couple of different types growing around that area.
In Ritter´s book, he published a photo of this species. Unfortunately this photo is not very good and it is one of the species that are rare in cultivation. Almost all labels on plants grown from Ritter´s seeds are lost, but the plant is definitely available. On the market, it sometimes shows up labeled as Trichocereus bridgesii, or probably also labeled as Trichocereus PC. Please note that there is a wide variety of plants from this site and the range is very big, ranging from spiny to completely spineless plants.
Ben Kamm published some photos of a Herbarium specimen that was very close to Trichocereus bridgesii as well.
Where to buy seeds and plants of Trichocereus riomizquensis?:
Though Trichocereus riomizquensis is common in cactus collection in the USA, it is usually mislabeled. Sacred Succulents were giving away seeds after their Field Trips and some plants might have gotten into the hands of collectors. They are also selling live plants grown from their collected seeds sometimes.
Description of Trichocereus riomizquensis:
This is partial description of Friedrich Ritter´s original description, including remarks on how to keep it apart from T. scopulicola.
Trichocereus riomizquensis is 6-8 centimeters thick (while Trichocereus scopulicola is 8-10 centimeters thick), it has 5-6 ribs, (T. scopulicola: 4-6), its flanks are 2 centimeters wide (Scopulicola 3-4 cm wide flanks), the flanks are less rounded than the ones on Tr. scopulicola. It has rounded areoles (while the ones on T. scopulicola are usually oval). The areoles have a very visible fluff with a diameter of 2-3 mm. The 1-5 spines are honey-colored and between 1-3 mm long. Sometimes they are even missing. The flower of Trichocereus riomizquensis is 20 centimeters long (while the flowers of T. scopulicola are 16-20) and covered with dark brown/white wool with large scales. The fruit looks knobby.
Type locality: Chuyllas near the Rio Mizque, on very steep rock walls in the province Campero, Bolivia. Discovered from Ritter in 1958 – FR 856.
Ritter´s original photo of his Trichocereus riomizquensis. It is possible that this plant is the same strain as the American PC clone, which gets very close to this plant´s phenotype. However, DNA testing needs to be done to verify. The photos show two VERY similar plants though.
In comparison to Ritter´s plant, check out the PC Trichocereus clone above. (Forest and Kim Starr)
This is one of the plants from the Sacred Succulents Field Trips:
Trichocereus riomizquensis is one of the most interesting species from the Sacred Succulents Field Trips because of its incredible range. Some plants look like the Trichocereus bridgesii-type plants with long spines from the Field Trips and some other ones look like the short spine versions that Friedrich Ritter´s description was about.
If you take a close look at the whole appearance of this plant, you can see that it has a similar areole shape to the areoles on the well known Trichocereus PC clone, also known as predominant cultivar or predominate cultivar. The flower and the overall appearance are so similar that everything else would be extremely surprising. Despite the fact that there are some very spiny plants at this site, there are some other which get extremely close to Ritter´s original photo. Though this will probably never be proven, there´s definitely reasonable doubt that this PC clone is actually a Trichocereus pachanoi.
There is a lot variation within the populations the original site near the Rio Mizque. This population is one of the most interesting Trichocereus populations out there and DNA testing should absolutely be made to look into its relationship to Trichocereus bridgesii.
Where to buy seeds or cuttings of Trichocereus riomizquensis:
Well, Ben and Sacred Succulents would be my starting point if I were in the USA. They don´t ship plants internationally, but if you have the luck to be in the country you might be able to get some cuttings. Apart from this, I do not know any sources for this species. Most of Ritter´s old plants have lost their labels meanwhile, which makes getting one even harden. I am sure that some of them show up on online market places labeled as Trichocereus bridgesii every now and then.
This photo here looks really unspectacular, but shows the area of the Rio Mizque. It is the place of origin of this rare species and most of the plants that can be found there are obviously Bridgesii related.
Check out our main plant database page for Trichocereus pachanoi aka Echinopsis pachanoi here:
And Trichocereus bridgesii here:
And this article I wrote about PC
Also check out our Trichocereus Facebook group here:
Trichocereus scopulicola, also known as Trichocereus scopulicolus or Echinopsis scopulicola is a columnar cactus from Bolivia. It was discovered and described by Friedrich Ritter. Its current status is unknown, but it may be extinct in nature.
Trichocereus scopulicolawas discovered by Friedrich Ritter during one of his expeditions to Bolivia in 1959. The location of the type is Tarija, Bolivia. More precisely, Ritter gave Tapecua as the location and assigned the collection number FR991 and sold seed of his discovery through his legendary Winter Seed lists. Because of that, he helped spreading the plant all over the world, despite the fact that Trichocereus sScopulicola is really rare in nature. There are very few collections of this plant in nature and I am always interested in obtaining seed from new scopulicola types. The plant grows in Tarija in the province O Connor. And no, this has nothing to do with Sarah Connor from the movie TERMINATOR. Trichocereus scopulicola grows in the cactus forests around the Department Tarija at around 1000-1500 meters.
Description of Trichocereus scopulicola:
Trichocereus scopulicola grows columnar like a tree and pups from the base. But it´s actually rare for this plant to produce numerous shoots and most plants don´t have any side shoots. Trichocereus scopulicola can get up to 4 meters tall though most specimens are smaller. The columns are between 5-10 centimeters in diameter and have a nice, dark green epidermis.
Trichocereus scopulicola can have 4-6 ribs though most specimens have five. The areoles are furrowed. The areoles are sunk in and have very little white fluff/wool on top of them. The areoles are rounded or oval and are between 1-4 mm long and 1-2 mm broad, which is very small for a Trichocereus. The distance between the areoles is between 15 and 30 mm. Areoles that form flowers have 4-5 mm diameter. Large, adult plants often lack the spines, while very young seedlings look remarkably similar to a Trichocereus pachanoi and can only be differentiated by the weird rib shape of Trichocereus scopulicola. Adult plants have (if they have any) 3-6 spines that are very small and up to 1.5 mm long. Seedlings have 6-7 ribs, areoles up to 2 mm in diameter and 3-5 mm away from each other, 7-14 needle-like spines (2-3mm long), of which two are central spines.
Flower of Echinopsis scopulicola:
Trichocereus scopulicola flowers from the apex but there are plants where the flowers come out from lower points on the plant. The flower is white and between 15-22 centimeters long. Trichocereus scopulicola is a night-flowering species but the flowers stay open until the late morning.
Fruit of Trichocereus scopulicola:
The fruit of Trichocereus scopulicola is green and can get up to 6 centimeters thick.
Friedrich Ritter considered this species to be very close to Trichocereus bridgesii, which is one of the plants that grow in the neighborhood of Trichocereus scopulicola. And it´s very likely that Tr. scopulicola is some kind of natural hybrid involving Trichocereus bridgesii or Trichocereus pachanoi.
In addition, Ritter wrote that Trichocereus riomizquensis is related to it, but not as closely related as Trichocereus crassicostatus is. These days, Trichocereus crassicostatus is generally seen as a synonym of Trichocereus scopulicola or Tr. pachanoi. So far, I´ve not been able to track a specimen down but they are certainly out there. If you grow one, let me know.
Cultivation of Trichocereus scopulicola:
Trichocereus scopulicola is similarly tough as Trichocereus bridgesii. The reason is simple; both come from Bolivia and are used to the same conditions. Bolivian Trichocereus species are very drought resistant, but can also deal with strong rainfalls in summer pretty flawlessly. However, they should not be watered when it´s cold and they prefer a purely mineral soil mix because that dries up a lot faster. During the hot summer season, they can be watered every few days when the soil has dried up again. Don´t water them when it´s cold or rainy because that can cause rot.
Winter protection and Minimum Temperature:
Scops are relatively hardy and can short night frosts of down to -5° Celsius and maybe even lower than that, but I would not test it out because low temps weaken the plants. The minimum average temperature should be around 10° Celsius and they should be completely dry over winter if you take the plants inside. If the get wet over a prolonged period of time, it can cause root rot or other infections.
Seed & live cuttings:
I get seeds every now and then and I know a couple of growers who actively breed with Scops. There sometimes are some available at SAB and the SAB forum. Besides, Misplant makes a couple Scop Crosses a year. This year, he made a pretty cool cross between a Scop and a colored Grandiflorus, which I can wholeheartedly recommend you because it might produce Scop seedlings with a colored flower.
Trichocereus scopulicola can be used as a grafting stock. It is a great stock that accepts graftings very easily.
Photos of Trichocereus scopulicola
Trichocereus scopulicola FR991 (above)
Trichocereus scopulicola ‘Super Pedro’ above
Sausage Plant x Trichocereus scopulicola _ Echinopsis scopulicola (Below)
TRICHOCEREUS SCOPULICOLA RITT., “Cactus” April 1966 Körper: Aufrechte Säulen, nicht oder nur gering vom Grund sprossend, 3-4 m hoch, 8-10 cm dick, dunkelgrün. Ri. 4-6, meist 5, fast höckerlos, breit und stumpf, die etwas gewölbten Planken ca 3-4 cm breit, Trennfurchen gerade. Ar. etwas eingesenkt, gering weißfilzig, rundlich oder oval, 1-3 mm lang, 1 mm breit, 15 bis fast 30 mm freie Entfernung; Blühareolen ca 4-5 mm Dm., rund, St. an großen Pflanzen fehlendoder 3-5, pfriemlich und nur ca 1 mm lang; Sämlinge haben 6-7 Ri., Ar. von 1-1,5 mm Dm. mit 3-5 mm freier Entfernung und 7-13 nadelförmige, weißliche oder braune, 2-5 mm lange St., davon 1-2 zentral. Bl. meistnahe dem Scheitel, zuweilen auch tiefer, 16-20 cm lang, duftend, nachts öffnend, in den kühleren Morgenstunden noch offen. Frkn. grün, groß gefeldert, Felder ca 1 cm Dm., oben auslaufend in grünliche dreieckige Schuppen von 1-2 mm Länge, mit weißen, oben dazu auch schwarzen Wollhaaren. N.-K. bräunlichweiß, tubisch, sehr eng um den Gr., ca 2 cm lang, mit Nektar. Rö. darüber trichterig, 65-85 mm lang, innen und außen hellgrün, die grünen Schuppen nach oben bis ca 25 mm Länge und 15 mm Breite an Größe zunehmend; Obergänge in die Krbl. rotbraun, Haare sehr krauswollig, schwarz mit weiß. Stbf. unten blaßgrün, nach oben gelblich, 7-9 cm lang, die des Saumes 4-5 cm lang; Insertionslücke ca 4 cm; Beutel bräunlich. Krbl. 6-8 cm lang, 2,5-4 cm breit, mit schmaler Basis, Enden gerundet mit oder ohne Spitzchen, nahe oben am breitesten, weiß, die äußeren schmaleren weiß mit grünem Mittelstreif. Gr. blaßgrün, 14-18 cm lang, wovon ca 2 cm auf die 12 hellgelben ausgebreiteten Narbenlappenkommen. Fr. grün, 4-5 cm langunddick, gefeldert und bedeckt wie Frkn., wohlschmeckend, Sa. 1,8 mm lang, 1,3 mm breit, 0,8 mm dick, fast nierenförmig, Testa glänzend schwarz, etwas gehöckert, Hilum oval, bräunlich, sehrschief. Die Art ist verwandt mit TRICHOCEREUS BRIDGESII, noch näher mit TR. CRASSICOSTATUS. Heimat Felsenhänge und Blockhalden von Gebirgswäldern des Depart. Tarija in etwa 1000 bis 1500 m Höhe. Typusort TAPECUA, Prov. O’Connor, von mir entdeckt 1959, Diese Art ist eine vorzügliche Pfropf unterläge. Nr. FR 991. Abb. 443.
I wanted to clarify some things about the PC Trichocereus clone and the differences to classic Trichocereus pachanoi. What it is, where it probably is from and what it isnt. The name is one of the most overused names in the history of Trichocereus culture. I personally hate it and spent days discussing the whole situation with friends or interested people in the Trichocereus Facebook group. If you hear the word PC in a Trichocereus group, JUST RUN. Log off, go outside and be in your garden. Still, if you actually wonder what those guys are actually talking about, I am happy to shed some light on this issue. Please keep in mind that I hate to use the name of this cultivar, strain or whatever you might want to call it and I will only mention this one time and one time only.
What does PC Trichocereus stands for? It originally means PREDOMINATE CULTIVAR. However, PREDOMINANT CULTIVAR would probably be more appropriate.
Photo: moonunitbotanica.com / PC Trichocereus in Australia
PC Trichocereus in a garden. Photo: Forest & Kim Starr
Now what is it really and is this all BS?
No one knows for sure and DNA testing needs to be done. That´s pretty much my main argument and people love to misinterpret this article. PC Trichocereus pachanoi (sic) is a clone, but there also are other plants grown from seeds that are probably coming from the same site this clone is coming from too. In California and parts of the USA, this clone is really common around parks, schools or gardens. The exact origin of PC Pachanoi (like many call it) is unclear. However, it is very similar to a collection made by Friedrich Ritter, which he later described as Trichocereus riomizquensis. Since there are so few photos available this will be hard to verify. In my opinion the PC Trichocereus clone needs DNA testing and everything else is speculation. Personally, I don´t give a shit. This is not my clone, and I did not have any connection with the naming of it. The person who somewhat described it was Michael S. Smith on the SAB forum. His opinion about PC was that it was VERY similar to Ritter´s population from Rio Mizque and the seed grown plants from NMCR. The photos of those can be find on SAB, so make sure to check them out. If he still thinks that I do not know.
Two things are certain about PC Trichocereus. One, it is VERY similar to spineless or short spine versions of Trichocereus bridgesii. Two, it is so different from actual Trichocereus pachanoi that every Noob can easily identify it after a few months of reading. There must be a reason for the fact that it is so different to classic Trichocereus pachanoi. Whether it is a hybrid or a short spined form of Trichocereus bridgesii is impossible to verify without DNA testing. And one thing should be clear by now; I the author don´t care enough to investigate. Anyone that wants to jump face forward into the subject and fund a DNA test be my guest. More power to you my friend. Just know that the discussion around this clone will always be on Kindergarten level, no matter what the outcome is. It is the Trichocereus version of “but her emails”. Facts or actual knowledge do not matter and too many people who have no experience with the lesser known Trichocereus species love to shout their opinion at anyone that doesn’t agree.
Now that we got that out of the way, here are some more infos and a more thorough description of PC and similar plants.
Trichocereus riomizqzensis FR865
This is the original photo from Ritter´s book. Do you see the white hairs on the flower and the way the areoles look? Like, the sawtooth ribs and the absent spines? Well, keep in mind. You will need it later. Ritters official collection name of this plant was Trichocereus riomizquensis FR856 and they originally comes from Chyllas. Again, there is no way of knowing for sure, but PC and Ritter´s Trichocereus riomizquensis are very similar. Please don´t use Sacred Succulents pics for making the argument that they look different because there are also Trichocereus bridgesii growing at the whole area and it is very likely that at least some of the plants collected back then actually fall into Trichocereus bridgesii. Ritter´s plant was almost spineless and the newer Sacred Succulents plants are a lot spinier. This species simply needs DNA testing to establish a baseline and find out if Trichocereus riomizquensis isn´t actually just a form of Trichocereus bridgesii. Since there are many spineless versions of Trichocereus bridgesii, this might very well be the case.
The original site is the Rio Mizque and we and my friends from Sacred Succulents visited the original site a couple of times. It is extremely similar to Trichocereus pachanoi, but differs in substantial points like the hairs on the flowers and the overall rib structure. Though it is common belief that the San Pedro cactus aka Trichocereus pachanoi grows in Bolivia, all the San Pedro related plants we ever came across IN THE WILD either belonged to Trichocereus bridgesii or Trichocereus scopulicola. That also applies to the regional type from the Rio Mizque. I have all kinds of photos of those plants on the pages about Trichocereus riomizquensis and I don´t want to repeat this information here again. This is a long-spined version of this but there also are a lot of short-spined ones on that site. I seen them. Just like this PC Trichocereus, they have 6-7 ribs, those weird areoles and golden spines without swollen spine bases. Overall, they are just a short-spined version of Trichocereus bridgesii. In addition to the short spined versions, there are also MANY versions with longer spines at this site and they are basically indistinguishable from Trichocereus bridgesii. In my opinion they probably ARE Trichocereus bridgesii varieties. People often like to compare the Ritter clone FR865 (look at the photos again) to spiny Trichocereus bridgesii that Sacred Succulents collected and labeled Trichocereus bridgesii during their field trip. Again, some of those probably were treated as local populations of Trichocereus bridgesii, so it´s kinda unfair to make a comparison between the spineless plant that was originally described as Trichocereus riomizquensis to basically a random local population of Trichocereus bridgesii. All of these plants CLEARLY belong to Trichocereus bridgesii in the greater context (even the spineless collection), but Ritter´s plant was clearly not the same clone or type of plant as the spiny Bridgesoids that also grow in that area. That plant is clearly photographed in his original photo, and the fact that it looks nothing like some of the spiny collections from the area should instantly end all comparisons. There are spineless AND spiny versions of Trichocereus peruvianus, so it shouldn´t come as a surprise that it might be similar with Trichocereus riomizquensis.
Drought Resistance and Hardiness
Let me just say that one thing that all Bolivian Trichocereus species have in common is their drought resistance. They literally live in a hot desert and are a lot more resistant to drought than Trichocereus pachanoi or some of the other Peruvian San Pedros. And that’s where I want to draw the line directly to this Californian clone. Clones & cultivars are not humbug or bullshit….cultivars exist in EVERY field of commercial cultivation and everyone who tells you different is a fool. One such cultivar is the infamous PREDOMINANT CULTIVAR, which is extremely drought resistant and manages to thrive in the California climate too. This clone is so present in that area that it´s probably the most common Trichocereus. We tested it numerous times…almost none of those Californian plants were able to mate with each other…simply because they were genetically identical and cuttings of each other. I seen whole nurseries filled up with PC because they are so damn easy to grow. They just cut them in small pieces and stick them into the ground. And after five years, they sell it for 30-100 bucks. All those plants share the same flower characteristics and are closer to Trichocereus bridgesii than they are to Trichocereus pachanoi. They are covered with white hairs, which is absolutely typical for Trichocereus bridgesii. I know a Bolivian Trichocereus species when I see one…and this Trichocereus PC is one without a doubt.
The flowers of PC Trichocereus:
Do you see all those white hairs? Good, because it’s important to differentiate between certain Trichocereus species. Trichocereus pachanoi tends to have black or brown hairs, while this one has whitish hairs on top of a black or brown base. And that’s typical for some Bolivian San Pedro strains, e.g Trichocereus scopulicola.
One common argument that I often hear from people with an agenda is that the white hairs on PC Trichocereus and Trichocereus scopulicola are just white because they are stained by the sun. I find that argument insulting, simply because there are so many photos that prove that there is a visible tendency for whiter(!) hairs on some Bolivian species when the buds/flowers are originally formed. OF COURSE THE SUN BLEACHES THE HAIRS ON THE FLOWERS OF ALL TRICHOCEREUS SPECIES. The sun bleaches everything including the hairs of all living things if you expose them to it, but it should be pretty obvious that there are wild differences in hair coloration in the genus Trichocereus when they are originally formed. Later on, the hair color of all species is under constant attack by the strong sunlight and bleached until only the brown or black wool below remains. Most of these flowers have hairs and wool (usually around the scales on the flowers), and both are two different things. If you look at the photos it becomes clear that there´s brown wool coming out in between the scales (only a few mm long) of both PC and Trichocereus scopulicola, and the substantially longer whitish hairs (up to a couple cm long).
Ritter wrote in his book that Trichocereus riomizquensis is closer to Trichocereus scopulicola than it is to Trichocereus bridgesii. I think this speaks volumes, and it clears up why people often have a hard time differentiating bloated Trichocereus scopulicola and PC Trichocereus.
Those two photos of PC Trichocereus are from Misplant.net! Check out their seeds because they are amazing. Well, just compare the photos and see for yourself. The top photo is the flower bud of this PC Trichocereus and the lower one is a bud on a Trichocereus scopulicola. They are at different stages in their development, but I am sure you see the similarity in the important parts. And the same applies to the flower on Trichocereus bridgesii, which is another Bolivian Trichocereus.
Scop from Misplant.net
ID Chaos on Forums and Facebook Groups
Alright, now that we have this out of the way let me just say that discussions about PC are very common on message boards and Facebook groups. Like it is with most other things in life, people who do not have enough experience just love to identify stuff even though they should probably not. PC is among the most misidentified plants on Trichocereus groups. And this is not because it is so difficult to identify. Like I said, even a noob can identify it, IF he knows what to look for. Due to the fact that people use PC for many classic Trichocereus pachanoi, there is total chaos around what actually constitutes a PC Trichocereus or not. In pretty much every ID request involving Trichocereus pachanoi, there are people that will call it a PC. If something has spines, there´s a good chance someone will label it PC. If you know what to look for, this clone is one of the easiest ones to identify though.
Is the PREDOMINANT CULTIVAR A CLONE?
Yes, but there are also people that made crosses with it and grew offspring of it. The majority of the plants in the States is clone, but I know that there´s also a lot of offspring that´s making the rounds. Misplant alone made hundreds of crosses with this clone, and I´m sure he wasn´t the only one. All cuttings taken from the main PC clone are genetically identical.
What about sister plants / seedlings grown from the same fruit?
Regardless what it is, it is very likely that there were other plants from the same population or fruit. If it is actually Ritter´s plant from Rio Mizque in Bolivia, there are probably thousands of other seedlings grown from his seeds. It doesn´t change the fact that the majority of PCs around are one clone, but it just underlines that there might be more plants from the genetic proximity. I doubt you can differentiate the actual PC from its offspring or closely related sister plants. I´ve seen lots of seedgrown PC hybrids and they pretty much looked like the famous parent. It is a very dominant clone and in almost all crosses with it the classic PC traits came through.
Short Spined Trichocereus bridgesii from Bolivia
Here are some Bolivian T.bridgesii and Trichocereus riomizquensis with very short spines. They are still part of Trichocereus bridgesii in a wider sense, but you can see that there is a clear similarity to the PREDOMINATE CULTIVAR. Same rib structure with sawtooth ribs, correct hair color, almost no spines, same skin structure, same golden spines (unlike gray or brown on T.pachanoi) etc. Imagine them with long golden spines and you have a Trichocereus bridgesii,
Well, okay. I want to come to and end but it´s important to make a very good point. YES, there are many San Pedros that are extremely similar to this clone. Not all of them are the same and I am sure there´s a fair amount that has absolutely nothing to do with this one. But it is absolutely proven that there IS a common clone in the USA and it is easily distinguished from typical Trichocereus pachanoi. There must be a reason for it.
Nurseries wanna make money and will replicate everything they have a market for. And those Bolivian Trichos or similar plants (as in PC ) are tough like hell. You literally stick them in the ground and they grow. And that played a part in the fact that this Trichocereus strain became wildly common in some parts of the USA.
Alright, I want to sum this up. Everyone is a bit in the right here. The way this plant is discussed recently is out of control. And some people tend to forget that there is a huge number of plants that are really similar to this PC Trichocereus…and they are coming from the habitats. In Peru, there are similar plants and I just posted the examples that you can find in Bolivia as well. But that doesn´t mean that those plants were just invented by cookoo internet theoreticians. They were collected, sold and commercially cultivated. This plant does probably NOT come from Backeberg, which is another theory that was discussed heavily.
Photos of PC Trichocereus
Check out our main plant database page for Trichocereus pachanoi aka Echinopsis pachanoi here:
And Trichocereus bridgesii here:
Also check out our Trichocereus Facebook group here:
Trichocereus pallarensis, also known as Echinopsis pallarensis, is an obscure species from North Peru that was discovered and described by Friedrich Ritter. It belongs into the same context that Trichocereus santaensis / Echinopsis santaensis belongs to.
Trichocereus pallarensis is a species that was described by Friedrich Ritter and listed in his WINTER catalogs starting in 1961! I do have most of the old Winter catalogs, but I unfortunately not the ones after 1960. But that´s not a problem as I have a whole lot of other information about Trichocereus pallarensis.
Ritter wrote about this species numerous times. He basically called this plant a “variety of Trichocereus pachanoi”, but described it as a new species just in case. Back then, it was common that botanists or taxonomists wrote new descriptions only based on minor differences, that would only be seen as a regional form by today´s standards.
Trichocereus pallarensis has 3 – 6 radial spines (15 – 50 mm long). Those are brown or honey colored and relatively thin compared with the ones on Trichocereus peruvianus and Trichocereus pachanoi. The middle spines are often missing or there is only one very strong and long middle spine. It is very similar to Tr. pachanoi in regards to the spination and most of the spines are only few millimeters long. The areoles are often very small and those packed areoles usually tend to miss the one middle spine as well.
Flowers of Trichocereus pallarensis:
Friedrich Ritter was not able to get a good description of the flower and I am working on one myself. The plant is very rare and if you happen to have a flowering sized one, please let me know so we can improve the flower description. With that said, it comes from the Pachanoi group and is probably almost identical to the one of Tr. pachanoi. The flower is definitely white, but I´d love to measure it some more.
Fruit of Echinopsis pallarensis:
The fruit of Trichocereus pallarensis is 5 cm long and 4 cm thick. Covered with GRAY wool. Seeds: The seeds of Trichocereus pallarensis are identical to the ones on other Tr. pachanoi types.
Origin/ Type locality of T.pallarensis:
Trichocereus pallarensis grows in Llancora, near Cajamarca. Near Pallar (that´s where the name comes from) and east of the cordillera Blanca. Department Ancash at 2.500 – 3.000 meters altitude.
Where to buy Trichocereus pallarensis seeds and plants:
Trichocereus pallarensis is very rare and only a few shops have them in stock. If you want to buy seeds of Trichocereus pallarensis, please join my seed list and I´ll let you know next time I have some. You can also get some fresh seeds from Sacredsucculents.com every now and then. They have a beautiful number of crosses that they produce every year. You might also be able to get some from Cactusaffinity and Misplant.
Trichocereus pallarensis FR1468 Locality: Machar, Peru (Ritter)
Check out our main plant database pages for Trichocereus pachanoi aka Echinopsis pachanoi here:
The history of Trichocereus spachianus is very confusion and most taxonomists have their own opinion on how the plant originally came from and which subspecies or varieties are synonymous with it. The original plant described by Lemaire as Cereus spachianus in 1840 was said to originally come from Mexico and differed substantially from what we know as Trichocereus spachianus. Ten years later in 1850, Salm-Dyck described the Trichocereus spachianus as we know it today. Salm-Dycks plant is the modern Trichocereus spachianus. And according to his description, it has around 8 Ribs, a rib height of 10 mm and an areole distance of 20 mm. Both descriptions lacked Flower descriptions, but there is what Lemaire´s plant looked like according to the description: 10-15 ribs, rib height of 5 mm and an areole distance of 6-10 mm. The origin of Trichocereus spachianus is still not known, but there are some types in nature that are very similar to almost identical. Trichocereus santiaguensis grows around Santiago de Estero is the one that I suspected to be the original plant that was described as our modern Trichocereus spachianus. Besides, there is another population of a plant that was described as Trichocereus shaferi, which is probably synonymous too. Trichocereus shaferi grows in Jujuy near Leon. Another very similar Tricho grows in Bolivia and is called Trichocereus tenuispinus. That name is absolutely not valid and I am just mentioning it for the sake of completeness.
Trichocereus spachanius Description
Up to 2 meters tall and pupping from the base. Pups grow upwards and parallel to the main column. 10 – 15 Ribs and areoles approx. 1 centimeter apart. With yellow wool. 8-10 radial spines (0,6 bis 1 cm long) and 1 strong middle spine.
Flower: The flower of Trichocereus spachianus is white and up to 20 centimeters large. The Flowers don´t smell and the wild varieties are very unlike the ones in cultivation. Trichocereus spachianus is a night-flowering species, but the flowers stay open until late in the day.
Origin: Argentina (around Mendoza), in San Juan, La Rioja and San Luis. Jujuy (1500-1800 meters)
Trichocereus spachianus is a very tough and resistant cactus that can be used for all kinds of purposes, including as Grafting stock, fencing plant or for Hybrid cultivation. The flowers are very large and there are some amazing hybrids that involve Trichocereus spachianus. It is one of the best grafting stocks because it accepts many hosts. There are all kinds of plants that are synonymous with Trichocereus spachianus and none of the older species names like Trichocreus Santiaguensis or Trichocereus shaferi are valid today. Trichocereus spachianus is also called “Golden Torch” or “Golden Torch Cactus“.
Cultivation of Trichocereus spachianus:
Echinopsis spachiana is very frost resistant, but temperatures shouldnt go below -5° to -10° Celsius and it greatly depends on the general health of the plant and the dryness of the substrate if the plant suffers any damage. It has to be kept completely dry over winter and the bets temperature to overwinter it inside is at around 10° Celsius and with sufficient fresh air.
Seed & live cuttings sources: There are many sources for Trichocereus spachianus, including seed from various private sellers or commercial shops like Köhres, Misplant or SAB. Besides there are cuttings available from shops like Ebay and Amazon.
Varieties: There really aren´t that many accepted varieties of Trichocereus spachianus available. But there are a couple of regional varieties like Trichocereus shaferi, Trichocereus santiaguensis or Trichocereus spachianoides, which was a very similar plant that was probably synonymous and was collected and sold by Friedrich Ritter. The plant had the collection number FR980 and was collected in 1960/61.
Soil requirements: Trichocereus spachianus should be given a purely mineral soil mix that dries out very fast because it tends to suffer from rot if it is grown in seed with too much humous. You can use pumice, sand or any other mineral substrate. They like to get fertilizer on a regular basis. But I would recommend to water them only when it´s hot. No water on rainy or cold days and only water as soon as the soil has completely dried up! Trichocereus spachianus likes to be grown in partial shade but can also tolerate being grown in full sun. On the pics, you see that the plants are usually sown in full sun and they like it a lot. The flower is very large and beautiful, but the species needs to reach a certain size before it can flower.
by Alan levine Echinopsis
by Dru Bloomfield Echinopsis_spachianaby Gavin Anderson Echinopsis_spachiana
by Ikiwaner Echinopsis
by z2amiller Echinopsis_spachianaby z2amiller Echinopsis_spachiana
Krzysztof Ziarnek, Kenraiz Echinopsis_spachianaSoehrensia_spachiana by Elia Scudiero
by Raphael Quinet Echinopsis_spachiana
On the right side, there is TRICHOCEREUS SANTIAGUENSIS. That is a very rare variety of Trichocereus Spachianus.
Trichocereus riomizquensis BK10508.7 is a very cool Plant! that is obviously related to Trichocereus bridgesii.
Trichocereus riomizquensisis probably partially synonymous with Trichocereus bridgesii or belongs to Trichocereus bridgesii in a wider sense. The latter is not very surprising because both are from Bolivia and grow very close to each other.
Ritter gave CHYLLAS near the Rio Mizque in the province Campero as the type locality of Trichocereus riomizquensus, growing on rocky slopes.
Ritter assigned the FR/Winter seed code (after the name of his sister, who ran his seed business) FR856. After all these years, there are only very few plants of Ritter´s FR856 left which still have their original label intact and if thereanybody out there who grows a plant labeled Trichocereus riomizquensis FR856, please let me know and I will add them to the database! There were also seeds given away in the Sacred Succulents Field Trips and I´d love to see photos of the offspring as well.
Martin Cardenas Botanical Garden, Cochabamba, Bolivia 2010 – Sacredsucculents.com
If you are interested in Trichocereus riomizquensis, it can´t get any better than seeing the species in field expert Martin Cardenas´garden in Chochabamba. This plant is very unique, but also shows a close connection to Trichocereus bridgesii. I am sure if I was to take a look at the flowers now, I would see a flower that is extremely close to the flower of Trichocereus bridgesii. Buds, flowers and fruit bear white hairs, which can also be see on the notorious PC clone in the United States (which we suspect might be grown from Ritter´s Trichocereus riomizquensis seeds).
Trichocereus crassiarboreus is a plant that was discovered by Friedrich Ritter in 1957. When he found flowering specimens in 1964, he moved the species to Weberbauerocereus. I am not a specialist on Weberbauerocereus but I trust Ritters Experience on that ID. The species was later published by Karel Knize under the name Weberbauerocereus crassiarboreus but his description lacked substantial information and like the type locality, which made it impossible to have a baseline to compare against.
Karel Knize provided no photos for his collection, what makes it even more problematic to trace it back. Ritter wrote numerous interesting articles about this plant, including a complete description. Nonetheless, it seems that Knize´s description was the one that had priority. Because of that, Trichocereus crassiaboreus is now called Weberbauerocereus cuzcoensis. That also explains why Trichocereus crassiarboreus is nowhere to be found on most commercial seed and plant lists. At least not under this name. I have seen Weberbauerocereus cuzcoensis and it is a gorgeous plant that looks remarkably like a Trichocereus. I have never seen the flower of this species though. I also grew seeds from Karel Knize´s collection and they look a lot like Trichocereus glaucus so far.
Buy seed or plants of Trichocereus crassiarboreus:
The seed seller köhres once had some seeds of Trichocereus crassiarboreus/Weberbauerocereus cuzcoensis in stock. They are amazing plants and everyone should consider himself lucky to grow them. I might also add a flower description and a general description of this plant in the near future. But because it is not a real Trichocereus, I will push that back until I am done with the rest of the site!
Photos of Trichocereus crassiarboreus / Weberbauerocereus cuzcoensis
Check out our main plant database pages for Trichocereus pachanoi aka Echinopsis pachanoi here:
And Trichocereus bridgesii here:
Also check out our Trichocereus Facebook group here:
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