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Calymmanthium is a monotypic genus with one species, Calymmanthium substerile, a primitive tree-like cactus from northern Peru with an upright trunk and sprawling branches. It is a rare wild plant rather than a common garden or houseplant, so care advice is general to cacti of its type.
Calymmanthium is a monotypic genus of primitive tree-like cacti from northern Peru. The only species is Calymmanthium substerile (also known as C. fertile). It belongs to the tribe Lymanbensonieae. The young flowers of Calymmanthium are completely encased within the plant's pedicel until it is fully developed, at which time the growing yellow flower swells until it cracks the pedicel open, allowing pollinators access. The plant has an upright trunk, but many of the branches sprawl on the ground.
Diploperianthium F.Ritter (nom. inval.) has been brought into synonymy with this genus.
Text excerpted from the Wikipedia article Calymmanthium by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
