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Trichocereus tarmaensis / Echinopsis tarmaensis

Trichocereus tarmaensis Rauh & Backeberg is a close relative of Trichocereus cuzcoensis that was described as a separate species. There are various differences between Trichocereus cuzcoensis and this species, and some forms of Trichocereus knuthianus are considered to be synonymous with T. tarmaensis as well. Trichocereus tarmaensis / Echinopsis tarmaensis Trichocereus tarmaensis reaches a size…

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Trichocereus knuthianus (Echinopsis knuthiana)

Trichocereus knuthianus Echinopsis knuthiana 77

Trichocereus knuthianus is a plant that can be found in many parts of Peru. As a species, it is much more diverse than the clone that it is mostly reduced to and there are various forms that belong into the context of Trichocereus knuthianus.  In addition, there are intermediates with Trichocereus schoenii and Trichocereus tarmaensis…

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Trichocereus skottsbergii / Echinopsis skottsbergii (T. chiloensis)

Trichocereus skottsbergii Echinopsis chiloensis ssp. skottsbergii Ulrich Hörner (5)

Trichocereus skottsbergii Backeberg, also called Echinopsis skottsbergii, is a columnar cactus that is closely related to Trichocereus chiloensis / Echinopsis chiloensis. Under current taxonomy it is placed as a subspecies below Trichocereus chiloensis with Echinopsis skottsbergii as currently accepted name. Trichocereus skottsbergii grows together with Trichocereus chiloensis without forming zones of hybridization. The easiest way…

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