Pterostylis clavigera, commonly known as hairy snail orchid, is a species of orchid which is endemic to New South Wales. It has a rosette of leaves at its base, and when flowering, a single narrow, bright green and white flower on a rough flowering stem.
Pterostylis clavigera is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of dull green leaves 7–17mm (0.3–0.7in) long and 5–10mm (0.2–0.4in) wide with wavy edges. A single bright green and white flower, 11–17mm (0.4–0.7in) long and 4–7mm (0.2–0.3in) wide is borne on a flowering stem 50–150mm (2–6in) high and covered with short hairs. The dorsal sepal and petals are fused, forming a hood or "galea" over the column, the sepal and petals with a short, nearly horizontal point on the end. The lateral sepals are erect, in close contact with the galea and have thread-like tips 10–15mm (0.4–0.6in) long. The lateral sepals almost close off the front of the flower and the sinus between them has a dark green central area. The labellum is 3–5mm (0.1–0.2in) long, 1–2mm (0.04–0.08in) wide and hidden inside the flower. Flowering occurs from June to September.[2]
1 2 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p.298. ISBN978-1877069123.
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