A perennial glabrous herb with two entire, ovoid or subglobose tubers. Roots short and relatively thick. Stem (10–) 20–70 (–115) cm, pale green, sometimes faintly marbled with purple, solid, cylindrical, smooth, and obscurely angled above. Leaves pale to dark green; the lower 4–10, 5–20 × 3.5–6 cm, elliptical‐oblong to oblong‐lanceolate, obtuse to acute at apex, entire, keeled and erect or spreading, many‐veined; the upper smaller, tapering to an acute apex, clasping the stem. Inflorescence a spike 1–25 (–50) × 4–12 cm, rather lax, and cylindrical. Bracts 0.5–5 × 0.1–0.2 cm, pale green or white, often tinged with rose, narrow linear, tapering to an acute apex, more or less membranous, often with in‐rolled edges, with a green central vein and about three others on either side. Flowers greenish‐white with a very long, ribbon‐like and white, green and purple or brownish twisted labellum hanging obliquely downwards (on small spikes with few scattered flowers the labella often appear horizontal), and a strong smell of billy goats. Outer perianth segments 0.7–1 cm, forming a helmet or hood, cohering at the base, free or not at the tip, whitish‐green often flushed with purple spots or streaks inside and out, ovate, rounded at apex,
Journal of Ecology – Wiley
Published: Feb 1, 2002
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