Copiapoa humilis subsp. tenuissima Encyclopedia›Copiapoa›Copiapoa humilis subsp. tenuissima Copiapoa humilis subsp. tenuissima Family Cactaceae Named by F.Ritter ex D.R.Hunt (2003) Epithet tenuissima: very slender (spines) Native range South of Antofagasta, Chile Altitude 300–800 m, coastal escarpment Stem (above soil) 2–4 cm across; geophytic Taproot Up to 25 cm; primary storage organ Ribs 8–12; tuberculate Flowers…
Copiapoa humilis is the most forgiving and widely cultivated species in the Copiapoa genus. Complete care, history, subspecies complex, and locality information for collectors.
Copiapoa laui is the smallest species in the genus Copiapoa. This miniature clustering cactus from the Atacama coast of Chile grows partially underground, anchored by a thick taproot. Critically Endangered in the wild.
Complete guide to Ariocarpus trigonus, the largest species in the genus. Yellow flowers, sharply keeled tubercles, habitat in Tamaulipas and Nuevo León, and how it differs from Ariocarpus retusus.
Encyclopedia entry for Ariocarpus bravoanus subsp. hintonii: the dark, verrucose-textured dwarf from northern San Luis Potosí. Taxonomy, habitat, morphology, cultivation, and comparison with related Ariocarpus taxa.
A deep-dive into Ariocarpus bravoanus: taxonomy, habitat in San Luis Potosí, morphology, conservation, cultivation, and how to distinguish it from related species in the genus.
Ariocarpus agavoides — How to Grow and Care for This Rare Cactus Encyclopedia›Ariocarpus›Ariocarpus agavoides Ariocarpus agavoides Family Cactaceae Named by Castañeda (1941) as Neogomesia Transferred by E.F. Anderson (1962) Native range Tamaulipas & San Luis Potosí, Mexico Elevation 1,070–1,900 m Stem diameter 3–8 cm; subglobose Tubercles 2–7 cm long; spine-tipped Flowers Magenta; 3.5–5 cm across…
Ariocarpus scaphirostris — The Boat-Beaked Living Rock Encyclopedia · Ariocarpus A mature Ariocarpus scaphirostris on its own roots. The elongated, sharply pointed tubercles that give this species its name are unlike anything else in the genus. Each one tapers to a narrow tip and carries a faint keel on its underside, the feature that Friedrich…
Pseudolithos — The rock-like “weirdos” of the plant world Encyclopedia · Pseudolithos Pseudolithos Apocynaceae · Asclepiadoideae Family Apocynaceae Subfamily Asclepiadoideae Tribe Ceropegieae Subtribe Stapeliinae Named by P.R.O. Bally, 1965 Native range Somalia, Yemen, Oman, Ethiopia Accepted species 8 (Kew POWO 2025) Stem form Leafless; spherical to cuboid; tessellated Flowers Star-shaped; carrion-scented; maroon to yellow Pollination…
Ariocarpus kotschoubeyanus — The Smallest Living Rock Encyclopedia›Ariocarpus›Ariocarpus kotschoubeyanus A mature Ariocarpus kotschoubeyanus type form in cultivation. The star-shaped rosette of narrow deltoid tubercles, each striped with a central furrow of white wool, presses almost flush with the soil surface. In habitat, a dry plant like this can be invisible at arm’s length. Ariocarpus kotschoubeyanus…