rhizome creeping, stout, scaly, irregularly thickened between the nodes; leaves 1 or 2, radical, erect, linear-lanceolate, acute, 3–4 in. long at flowering time (older not seen); scape appearing with the young leaves and from the same sheath, erect, stout, 3/4–1 ft. high, with 2 or 3 amplexicaul acute sheaths on the lower part, 3–10-flowered; bracts lanceolate, acuminate, 1/4– 1/2 in. long; pedicels rather shorter than the bracts; flowers dull yellow with an orange-coloured keel on the lip; sepals elliptic-oblong, obtuse or apiculate, somewhat spreading, lightly keeled behind, about 3/4 in. long; petals rather narrower than the sepals and less spreading, otherwise very similar; lip 3-lobed, about 2/3 in. long, not saccate at the base; side lobes involute, broadly rounded, obtuse or apiculate at the apex; front lobe suborbicular, crenulate; disc with an obtuse fleshy keel from its base to the middle of the front lobe, bidentate at the apex; column clavate, 1/3 in. long, with a short foot; anther-case obtuse. null
