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Terrestrial herb, slender, geophyte, with root tubers, 0.15-0.60 m high. Leaves linear, grass-like, 5-7 radical, 3-7 cauline; basal leaves broadest, 40-140 mm long; upper leaves smaller, grading into floral bracts, glabrous. Inflorescence lax, nodding, secund, 100 mm long; flowers 10-30, 4-6 mm in diam., not resupinate, bright yellow. Sepals subequal; dorsal sepal 4-11 mm long. Petals 2.5-6.0 mm long. Lip deeply 3-lobed, 6-12 mm long, spur cylindrical, 2-6 mm long, calli 3, fleshy. Flowering time Dec.-Feb.
Slender herb, up to 600 mm high. Leaves generally all cauline. Flowers: lip deeply 3-lobed with central lobe 2 mm long and lateral lobes 1 mm long and 3 fleshy calli; spur 2-6 mm long; perianth bright yellow; Dec.-Feb.
Slender herb, up to 500 mm tall. Leaves generally all cauline. Lip deeply 3-lobed with central lobe 2 mm long and lateral lobes 1 mm long and 3 fleshy calli. Flowers bright yellow.
