limestone leek orchid (Prasophyllum calcicola)
Description
Prasophyllum calcicola is a terrestrial, perennial, deciduous, herb with an underground tuber and a single smooth, tube-shaped leaf which is 50–150 mm (2–6 in) long and about 2 mm (0.08 in) in diameter near the reddish base. Between three and twelve or more flowers are arranged on a flowering spike. The flowers are yellowish-green, about 4 mm (0.2 in) long and 3 mm (0.1 in) wide. As with others in the genus, the flowers are inverted so that the labellum is above the column rather than below it. The dorsal sepal is egg-shaped to lance-shaped, about 2 mm (0.08 in) long, 2–3 mm (0.08–0.1 in) wide and green with a red edge. The lateral sepals are lance-shaped, 2–4 mm (0.08–0.2 in) long and joined to each other for about half their length. The petals are triangular in shape, about 2 mm (0.08 in) long and 1 mm (0.04 in) wide. The labellum is 2–3 mm (0.08–0.1 in) long, oblong to lance-shaped and turns upward at 90° about half-way along. Flowering occurs in September and October
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: Prasophyllum
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