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Plants fairly stout, 200-800 mm; leaves cauline, many, suberect then spreading or recurved, elliptic to narrowly lanceolate, to 100 x 45 mm. Inflorescences rather dense, many-flowered; bracts leafy, lanceolate, acute, sparsely puberulous, 10-27 mm long; pedicel with ovary incurved, pedicel 5-10 mm long, ovary 10-20 mm long. Flowers green. Median sepal reflexed, deeply concave, elliptic, acute, 5-16 mm long; lateral sepals deflexed, somewhat rolled up lengthwise, semi-orbicular, acute, 6-16 mm long. Petals bipartite nearly to the base; upper lobe erect, linear, 6-15 mm long; lower lobe curving upwards like a horn, linear, tapering from a somewhat swollen base, 20-45 mm long. Lip tripartite from near the base, deflexed; midlobe linear, obtuse, 9-19 mm long; side lobes narrowly lanceolate, attenuate, 8-18 mm long; spur much inflated apically, 15-25 mm long. Anther 3-7.5 mm tall, canals porrect with upcurved apices, 4.5-8.5 mm long; stigmatic processes porrect, clavate, truncate, 3-8 mm long; central rostellum lobe triangular, c. 1 mm long.
Terrestrial herb, geophyte, fairly robust, 0.25-0.60 m high; with globose root tubers. Leaves many, cauline, ovate-oblong, 20-100 x 10-40 mm. Inflorescence fairly dense, racemose; flowers 8-20, resupinate, pale green, lip lobes white at base. Sepals unequal, median sepal ovate, 5-8 mm long, forming small hood. Petals divided, spreading; lower anterior lobes horn-like, curved upwards, crossing each other; posterior lobe short, filiform. Lip 3-lobed, midlobe 5-12 mm long, 2 side lobes shorter; spur 15-25 mm long, twisted, inflated towards apex. Flowering time Feb.-Apr.
An orchid. It is an erect herb up to 70 cm tall. The stem is leafy. There are 9-15 leaves and the lowest 2 can sheath the stem. The flowering shoots are 5-19 cm long. There can be many flowers. The flowers are green or yellow and in a dense group. They have 2 lobes. The tubers are oval to round and 1.5-3.5 cm long.
Lip 3-lobed from undivided base 1–2 mm long; mid-lobe 9.5–19 mm long, to 1 mm wide, linear; side lobes diverging, 8–18 mm long, the basal part flattened, 1–2.5 mm wide, usually with 1–6 short teeth, the apical part tapering; spur 14–28 mm long, very slender but suddenly swollen in apical 5 mm.
Petals 2-lobed almost to base, upper lobe 6–15 mm long, ± filiform, adnate to dorsal sepal; lower lobe 20–50 mm long, 1–2 mm wide at base, horn-like, usually curling up but occasionally erect and straight.
Leaves 9–15, sometimes distichous, the lowermost 1–2 sheath-like, the middle ones suberect or spreading, the largest 2–10 × 0.7–4.5 cm, linear to ovate, the uppermost grading into the bracts.
Terrestrial herb, up to 500 mm tall. Anterior petal lobe curling upwards, both petal lobes hairless. Spur 14-17 mm long, twisted once and inflated towards apex. Flowers pale green.
Dorsal sepal erect, 5–16 × 4–8 mm, ovate, convex; lateral sepals deflexed, 6–16 × 5–10 mm, obliquely ovate, rolled up lengthwise.
Inflorescence 5–19 cm long, laxly to densely few to many-flowered; bracts leafy, to 27 mm long.
Terrestrial herb 20–60(80) cm tall; tubers to 3.5 × 2 cm, ellipsoid or ovoid, woolly.
Stigmas 3–8 mm long, porrect, slender, widened and truncate at apex.
Flowers green or yellow-green, the lip occasionally white.
Anther erect, 3–7.5 mm long; canals 4.5–8.5 mm long.
Rostellum mid-lobe triangular, c. 1 mm long.
Flowers green in a rather dense raceme
An erect herb up to 21/2 ft. high
Pedicel and ovary 18–28 mm long.
Stem leafy.
