English: Cinnamon orchids.
Chinese: Guan hua lan shu.
Genus: 8 species.
Name: from Greek words korymbos meaning "bunch of flowers or fruit" and orchis meaning "testicle" or "orchid".
Region: Africa, India, Sri Lanka, Thailand, Malaysia, Philippines, Indonesia, New Guinea, Australia, Christmas Island.
Habitat: tropics; in moist, shady places in rainforest.
Herb; evergreen; terrestrial; grow in clumps.
Roots: thin; rhizome.
Stem: leafy; 1 or more thin, unbranched.
Leaves: pleated; papery; egg-shaped to elliptic; many near their top half.
Inflorescence: branching flowering from the upper leaf axils; with many crowded flowers.
Flowers: greenish white; widely-opening; sepals thin, spreading; petals are similar, slightly wider than the sepals; labellum is about as long as the sepals, closely surrounds the column and has a tube-like base and two longitudinal ridges.