圆柱叶组 yuan zhu ye zu

Roots smooth. Stem erect or pendulous, glossy when dry, wiry, not swollen, compressed cylindric, rigid, leafy throughout or with a pseudoraceme. Leaves well spaced, lax and alternate, normally terete, subcylindric, or subulate-cylindric, fleshy. Inflorescences borne on leafy stem or pseudoraceme; flowers small, borne one at a time in succession, lasting a few days to ca. 10 days.

About 20 species: India to S China and New Guinea; two species (one endemic) in China.