| Biology : |
Terrestrial herb 20-60 cm tall, slender, glabrous; tubers 1-2, ± ovoid, 1-2x0,5-1,5 cm; leaves cauline, 6-9, mostly in lower part of stem, mid-ones erect, lanceolate, 6-16x1-2,5 cm; inflorescence 4-17 cm long, loosely 4-20-flowered; flowers resupinate, (yellow-)green; bracts lanceolate, 10-25 mm long; pedicel and ovary 20-30 mm long, curved; sepals elliptical, 5-8x2-4 mm; dorsal sepal erect, convex, laterals spreading; petals 2-lobed from near base, lobes linear; upper lobe erect, adnate to dorsal sepal; lower lobe spreading; lip pendent, 3-lobed from claw 3 mm long, lobes filiform, ± equal, 7-14 mm long; spur pendent, 15-30 mm long, apical half swollen, apex notched. |
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