Habenaria weberiana Schltr.

A terrestrial herb 2.5 dm. to 1 m. high, glabrous except for the roots and petals.. Tubers ellipsoid or nearly globose, 1–2 cm. long, 0.5–1 cm. in diameter, sparsely tomentose.. Stem erect, slender to stout, leafy throughout its length.. Leaves 7–13, the lowermost sometimes reduced to a sheath, the lower 4–7 suberect, linear or lanceolate-linear, acute, the largest 10–28 cm. long and 0.6–2.5 cm. broad, the upper ones much smaller, adpressed to the stem, similar to the lower bracts.. Inflorescence 5–33 cm. long, 3–4.5 cm. in diameter, rather densely 5-to many-flowered.. Bracts lanceolate, acuminate, 7–27 mm. long, usually shorter than the pedicel with ovary.. Flowers spreading at about 45° from the rhachis, pale or yellow-green with white centre, with an unpleasant nocturnal smell; pedicel with ovary nearly straight, 1.5–2 cm. long.. Dorsal sepal reflexed, narrowly elliptical, obtuse, 5–6.5 mm. long, 2–3 mm. broad; laterals deflexed, very broadly and obliquely obovate with the apiculum lateral, 6.5–8.5 mm. long, 4.5–7 mm. broad.. Petals bipartite nearly to the base; posterior (upper) lobe recurved, linear, 4–6.5 mm. long, scarcely 0.5 mm. broad, ciliolate; anterior lobe spreading forwards, narrowly curved-lanceolate, acute, 7–13 mm. long, nearly 2 mm. broad, glabrous.. Lip deflexed, tripartite from an undivided base 2–3 mm. long; middle lobe linear, obtuse, 10–12 mm. long, ± 0.5 mm. broad; side lobes similar but 4.5–6.5 mm. long and not quite as broad as the middle lobe.. Spur ± parallel to the ovary, slightly swollen in the apical half, 1.5–2 cm. long.. Anther 2–3 mm. high, canals slender, porrect with incurved apices, 4.5–6 mm. long.. Stigmas porrect, slender with truncate swollen apex, 3.5–6 mm. long.. Rostellum very narrowly triangular, acute, ± 1.5 mm. long.