穗花组 sui hua zu

Rhizome creeping; roots sprouting mainly below pseudobulbs, spreading; new shoots arising from basal node of pseudobulb. Pseudobulbs distinct, apex with 1 leaf. Leaves persistent, thick. Inflorescence solitary, arising near pseudobulbs, an elongate to ± subumbellate raceme. Pedicel with basal node ± coinciding with attachment of subtending bract. Dorsal sepal with margin glabrous, papillose, erose, or ciliate; lateral sepals free, ca. as long as or longer than dorsal sepal, with margins glabrous or slightly denticulate, 3-5-veined. Petals: margins denticulate to ciliate, 1-3-veined; lip: margins without auricles or lateral lobes, margins otherwise ± glabrous, adaxially ± glabrous. Column: stigma protruding at its base or not, foot distinct; anther: front margin projecting or not, abaxially with or without a low, rounded crest; pollinia 4, inner 1/2 as long as outer or longer, all without appendages.

Six provisionally accepted species: India to Indochina; three species (one endemic) in China.