Pterostylis longicurva (Pterostylis longicurva)
Description
Pterostylis longicurva is a terrestrial, perennial, deciduous, herb with an underground tuber and when not not in flower, a rosette of between three and seven dark green, egg-shaped leaves lying flat on the ground. Each leaf is 10–25 mm (0.4–1 in) long and 5–15 mm (0.2–0.6 in) wide. Plants in flower have a single flower 16–22 mm (0.6–0.9 in) long and 6–7 mm (0.2–0.3 in) wide, which leans slightly forwards on a flowering stem 60–180 mm (2–7 in) high with between three and five stem leaves. The flowers are white with bold green stripes and brown markings. The dorsal sepal and petals are fused, forming a hood or "galea" over the column, the dorsal sepal with a short point.The lateral sepals are in loose contact with the galea, erect or backswept, have thread-like tips 12–16 mm (0.5–0.6 in) long and a curved V-shaped sinus between their bases. The labellum is 15–18 mm (0.6–0.7 in) long, about 2 mm (0.08 in) wide, brown, curved and protrudes prominently above the sinus. Flowering occurs from April to June.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum:
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Class: Liliopsida
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Order: Asparagales
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Family: Orchidaceae
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Genus: Pterostylis
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