Southern bearded greenhood (Pterostylis tasmanica)
Description
Pterostylis tasmanica is a terrestrial, perennial, deciduous, herb with an underground tuber . It has between eight and fourteen dark green leaves crowded around the base of the stem and extending upwards, the leaves 10–25 millimetres (0.4–1 in) long and 3–7 millimetres (0.1–0.3 in) wide. Flowering plants have a single green flower with translucent green panels, the flower 18–25 millimetres (0.7–1 in) long and 6–8 millimetres (0.2–0.3 in) wide arranged on a flowering stem 80–140 millimetres (3–6 in) high. The dorsal sepal and petals are fused to form a hood or "galea" over the column, the dorsal sepal with a short point on its end. The lateral sepals are turned downwards, joined near their bases with tapering tips 7–11 mm (0.3–0.4 in) long. The labellum 12–15 millimetres (0.5–0.6 in) long, bearded with bright yellow hairs up to 3 millimetres (0.1 in) long and ending in a dark brown knob. The flowers appear from September to November.
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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