Encyclopedia

TaxonomyHabitatMorphologyAlkaloidsLocalitiesFloweringGrowthCultivationComparisonConservation A mature Lophophora fricii in cultivation. The yellowish-grey-green body, with its large, softly elevated tubercles and sparse rib definition, is immediately distinguishable from its nearest relative Lophophora williamsii once you know what to look for. In habitat it sits flush with pale Coahuilan limestone soil, the grey-toned epidermis doing considerable work as camouflage. Lophophora…

Peyote (Lophophora williamsii) is a spineless, mescaline-bearing cactus of the Chihuahuan Desert in northeastern Mexico and southern Texas. Botanical identification, alkaloid chemistry, conservation under CITES Appendix II, US legal status, and seed-grown cultivation notes from the rarecactus.com encyclopedia.

A complete botanical reference for Lophophora diffusa: taxonomy, restricted Querétaro habitat, morphology, pellotine-dominant alkaloid chemistry, cultivation, and a direct comparison with Lophophora williamsii.

Ariocarpus retusus: morphology, habitat across five Mexican states, how subsp. furfuraceus differs, the crested f. cristata form, cultivation, and conservation. Authoritative collector-grade guide.

A deep-dive into Ariocarpus fissuratus subsp. lloydii: taxonomy, natural habitat in Coahuila and Zacatecas, morphology, how it differs from subsp. fissuratus, and a full cultivation guide covering soil, water, light, and grafting.

The peyote cactus, Lophophora, is a small genus of four accepted spineless species from northeastern Mexico and southern Texas. A complete guide to identifying L. williamsii (peyote), L. diffusa, L. fricii, and L. alberto-vojtechii, with distribution, morphology, legal status, and seed-grown cultivation notes.

Complete guide to the genus Copiapoa. Covers all accepted species including C. cinerea, C. humilis, C. esmeraldana, C. laui, and more.

Complete guide to the genus Mammillaria. Covers selected rare species including M. herrerae, M. pectinifera, M. luethyi, M. bertholdii, and more.

Complete guide to the genus Astrophytum. Covers all accepted species including A. asterias, A. myriostigma, A. coahuilense, and A. caput-medusae.

Complete guide to the genus Echinopsis. Covers columnar species formerly classified as Trichocereus, including E. pachanoi, E. peruviana, and more.