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Trichocereus cephalomacrostibas / Echinopsis cephalomcacrostibas Weberbauerocereus

Trichocereus cephalomcarostibas, also known as Echinopsis cephalomacrostibas, is a columnar cactus that was described as a Trichocereus species by Curt Backeberg and Werner Rauh. However, the plant in question later turned out as a Weberbauerocereus and the flower makes it pretty obvious that Echinopsis cephalomacrostibas is not a Trichocereus. The currently valid name of this…

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Trichocereus chalaensis (Rauh & Backeberg) Echinopsis

Trichocereus chalaensis Backeberg

Trichocereus chalaensis is a Peruvian Trichocereus species that is closely related to Trichocereus glaucus. Its alternative Echinopsis name is Echinopsis chalaensis (Rauh & Backeberg). I treat it as a correct species in the genus Trichocereus until DNA testing is able to disprove this. Right now, the name Echinopsis chalaensis is still formally valid, but it´s…

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Trichocereus harrissima (nomen nudum)

Alright, it´s obvious that Trichocereus harrissima is not an accepted species. The name probably came from a seed or plant seller who sold this plant at some point in the past. I list it as a nomen nudum here, which means that it is a bad name that it is a “nude name” that lacks…

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