Botanical placement
For the accepted name and native range used in this Codex, see Echinopsis pachanoi. Preserve “Trichocereus pachanoi” on historical and supplier records instead of erasing the original wording.
The plant described in 1920
Britton and Rose described an upright, branching cactus with six to eight broad ribs, often few or no spines, and very large, fragrant white flowers opening at night. Young stems were described as slightly glaucous, becoming darker green with age. Their name honors Abelardo Pachano. The original account is a historical reference for the species, not a diagnostic key to modern garden clones.
Britton & Rose · The Cactaceae, volume 2 (1920), pp. 134–140 ↗
Record the plant you actually have
Keep species assignment, named selection, seed-lot code and cutting history separate. Seedlings raised from a named parent are offspring, not automatically that parent’s clone. A blue surface, short spines or a notched rib is not enough to establish a pedigree. Explore lineage examples →
Growing decisions
Use root activity, drying time and recent weather to decide when to water. An account of daily summer watering in one garden is not a schedule for a cool indoor pot. Allow new plants to acclimate to stronger light. Build a care routine →
PC and “pachanot”
Those labels belong in a horticultural provenance discussion. Origins and the extent of its distribution remain questions for documented provenance research. See PC / pachanot.