Corymborkis Thouars,
Nouv. Bull. Sci. Soc. Philom. Paris 19 (1809) 318
Tall sympodial terrestrial plants with short rhizomes. Stem elongated, not fleshy, tough, with few to several leaves. Leaves sheathing at the base, spirally arranged, glabrous, plicate, persistent, convolute, thin-textured. Inflorescence a lateral panicle. Flowers medium-sized, ephemeral, resupinate or not, white. Sepals free. Petals free, fairly similar to the lateral sepals. Lip without spur, spathulate, not mobile. Column-foot absent. Pollinia 2, sectile, caudicles present, stipe absent, viscidium present.
Distribution
World wide tropics; about 5 species.
Distribution in the Philippines
Luzon (Ilocos Norte, Kalinga-Apayao, Cagayan, Laguna, Rizal), Catanduanes, Mindoro, Palawan, Negros, Leyte, Mindanao (Zamboanga, Agusan, Davao), Sulu; 1 species [Corymborkis veratrifolia (Reinw.) Blume].
Habitat
Terrestrial in lowland forests (primary and secondary) and deserted plantations.
Notes
Plants with stout broad-leaved stems, sometimes as tall as a person, carrying short lateral inflorescences of short-lived, white flowers. Fairly common in nature, but rarely cultivated. Corymborkis is related to Tropidia.