BK10508.7 Trichocereus riomizquensis, Totora , Cochabamba, Bolivia
Trichocereus riomizquensis BK10508.7 is a very cool Plant! that is obviously related to Trichocereus bridgesii.
The spination is very likely not that unique to justify regarding it as a separate species. It is probably partially synonymous with Trichocereus bridgesii. Which is soemthing that Ben from Sacred Succulents is perfectly aware of. Though he labeled them Trichocereus riomizquensis due to the particular place of origin where they come from, it obviously comes from the Bridgesii group. Which is not surprising because both are from Bolivia. The plant is NOT the same plant that Friedrich Ritter described in 1958 as Trichocereus riomizquensis….but you can see some similarities and there is probably a broad range between Ritter´s plants and those here.
Ritter wrote that the type locality of Trichocereus riomizquensis is CHYLLAS, near the Rio Mizque in the Provence Campero, growing on Rocky slopes.
Ritter assigned the FR/Winter seed code (after the name of his sister, who ran his seed business) FR856. Please note that Ritter´s plant is more like a Trichocereus pachanoi and was regarded a relative of Trichocereus scopulicola. So far, there are no reported specimens of Ritter´s authentic Trichocereus riomizquensis and if there is anybody out there who grows a plant labeled Trichocereus riomizquensis FR856, PLEASE CONTACT ME! I own a bad pic of a flowering specimen that literally looks like a Pachanoi. Please note that there are Peruvian samples of Trichocereus riomizquensis that look VERY much like a Trichocereus bridgesii too. So chances are, there are various plants that can be encountered with this label. If you raised seed of this plant from the Sacred Succulents Field Trip 2010, please let me know because I am constantly looking for better pics. But yeah, like I already mentioned, this is probably a Trichocereus bridgesii.
Martin Cardenas Botanical Garden, Cochabamba, Bolivia 2010 – Sacredsucculents.com
If you are interested in Trichocereus riomizquensis, it can´t get any better to the plants that grow in field expert Martin Cardenas´garden in Chochabamba. This plant is very unique, but also shows a close relationship 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 one on Trichocereus bridgesii. With white hairs and much like the ones you can see on the notorious PC clone in North America (which is Trichocereus riomizquensis grown from Friedrich Ritter´s seeds) or other Bolivian Trichocereus species like Trichocereus scopulicola.
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