大花组 da hua zu

Rhizome creeping; roots sprouting along rhizome, spreading; new shoots arising from basal node of pseudobulb. Pseudobulbs distinct, apex with 1 leaf. Leaves persistent, thick. Inflorescences solitary, arising near pseudobulbs, 1-flowered. Pedicel with basal node distinctly more than 1 × diam. of pedicel above subtending bract. Sepals free, ± equally long, margins glabrous, 5- or more veined. Petals: margins glabrous, 5- or more veined; lip with or without lateral lobes along margins well above its base, margins otherwise glabrous to partly or entirely erose or denticulate, adaxially glabrous. Column: stigma not protruding at its base, foot distinct; anther: front margin not or slightly projecting, abaxially with a low, or a high, conic crest; pollinia 4, inner more than 1/2 as long as outer, all without appendages.

Seventeen provisionally accepted species: Himalayas to the Philippines and Sulawesi; two species in China.