A terrestrial herb 2–11 dm. high, mostly glabrous.. Tubers globose to fusiform-cylindrical, 1–4.5 cm. long, 7–22 mm. in diameter, ± tomentose.. Roots slender, flexuous, pubescent.. Sterile stem to 5 cm. long, 3–4-leaved; lower 1–2 leaves short, sheath-like, obtuse, the upper 1–3 lanceolate to oblong-elliptical, acute, up to 5–13 cm. long and 2–6 cm. broad.. Fertile stem erect, slender to stout, covered by sheathing leaves; sheaths 8–13(–15), lanceolate, acute, up to 2.5–11 cm. long and 1–3 cm. broad.. Inflorescence narrowly cylindrical, (5-)10–42 cm. long, 1.5–2.5 cm. in diameter, loosely to densely many-flowered; bracts reflexed, lanceolate, acute, 1–2.5 cm. long.. Flowers curved outwards, sessile, green to yellow-green, sometimes tinged purplish or brownish; ovary 5–10 mm. long.. Sepals and petals decurved, united to one another and to the lip in their lower third or half.. Intermediate sepal oblanceolate, rounded, 3.5–5.5 mm. long, scarcely 1 mm. broad; laterals much twisted, obliquely and curved elliptical-oblong, obtuse, 4–6.5 mm. long, ± 1.5 mm. broad.. Petals oblanceolate, rounded, 3–4.5 mm. long, 0.5 mm. broad, pubescent and ciliolate.. Lip ellipsoid, much hooded, the apex shortly recurved, 4–5.5 mm. long.. Spurs rather straggling, very slender, 11–23 mm. long, 2 very short additional spurs often present.. Column inside lip, much curved, 3–5 mm. high; stigma orbicular or broader than high, 1–2 mm. high, rostellum deflexed, 3-lobed, 1.5 mm. long, the side lobes small, triangular, the middle lobe much longer, broadly spoon-shaped from a narrow base.
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Column 3–5 mm long, curved; stigma 1–2 × 1–2 mm; rostellum mid-lobe spoon-shaped from a narrow base, much longer than side lobes.
Median sepal 3.5–5 × 0.7 mm, oblanceolate, rounded at apex; lateral sepals slightly longer and about twice as wide, oblique.
Spurs 14–22 mm long, slender, pendent, sometimes with 2 extra rudimentary spurs less than 1 mm long below them.
Sterile shoot 3–4-leaved; lowermost 1–2 leaves sheathing; upper leaves up to 18 × 5 cm, lanceolate or elliptic.
Lip 4.5–5.5 mm long, ellipsoid, hooded, the apex reflexed, fleshy with a narrow mouth.
Inflorescence 10–40 × 1.5–2.5 cm, narrowly cylindrical, fairly densely many-flowered.
Sepals and petals curled under, joined to each other and lip in lower half or third.
Terrestrial herb 45–85 cm tall; tubers to 5 cm long, ellipsoid, woolly.
Flowers green or yellow-green, sometimes tinged with brown; scented.
Bracts up to 35 mm long at base of inflorescence, reflexed.
Flowering stem with 7–13 sheathing leaves up to 10 cm long.
Ovary 6–10 mm long, glabrous or slightly papillate.
A slender terrestrial herb up to 3 ft. high
Petals similar to median sepal.
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