A terrestrial herb 3–8 dm. high, glabrous except for the roots.. Tubers not seen; all roots appear to be long and slender, adpressed silky.. Stem erect, slender, leafy throughout its length, rooting towards the base.. Leaves 7–10, the lower 5–7 erect or suberect, linear or lanceolate-linear, acute, the largest 10–28 cm. long but only 7–12 mm. broad; upper ones smaller, lanceolate, adpressed to the stem.. Inflorescence 7–16 cm. long, 3–4.5 cm. in diameter, rather loosely 9–30-flowered.. Bracts lanceolate, acuminate, 8–15 mm. long, shorter than the pedicel with ovary.. Flowers suberect or curved outwards, green; pedicel with ovary ± curved, 1.5–2 cm. long.. Dorsal sepal erect or somewhat reflexed, narrowly elliptical, convex, 5–6 mm. long, 2–3 mm. broad; laterals deflexed, obliquely obovate, apiculum lateral, 7–8 mm. long, 4–5 mm. broad.. Petals bipartite nearly to the base; posterior (upper) lobe erect, ± adherent to the dorsal sepal, linear, 5–6 mm. long, 0.3 mm. broad; anterior lobe horn-shaped, projecting forwards at first and then ± recurved, fleshy, linear below, ± subulate above, 12.5–15.5 mm. long, 1–1.5 mm. broad.. Lip deflexed, tripartite from an undivided base just over 1 mm. long; middle lobe linear, ± incurved, the side lobes a little broader and more tapering, all lobes 11–14 mm. long, less than 1 mm. broad.. Spur slightly incurved, swollen club-shaped in the apical half, 12–15 mm. long.. Anther erect, ± 2.5 mm. high, canals horizontal with incurved apices, ± 5 mm. long.. Stigmas porrect, slender with swollen truncate apices, as long as the canals.. Rostellum triangular-linear, acute, ±1.5 mm. long.
Home