Prasophyllum montanum, commonly known as the mountain leek orchid, is a species of orchidendemic to eastern Australia. It has a single tubular, green leaf and up to fifty scented, greenish to pinkish flowers. It grows in montane ecosystems at altitudes above 1,500 m (5,000 ft).
Description
Prasophyllum montanum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single tube-shaped leaf, 500–700 mm (20–30 in) long and 8–10 mm (0.3–0.4 in) wide at its purplish base. Between ten and fifty fragrant flowers are crowded along a flowering spike 50–150 mm (2–6 in) long. The flowers are greenish to pinkish, 8–10 mm (0.3–0.4 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 dorsalsepal is egg-shaped to lance-shaped, 9–15 mm (0.4–0.6 in) long and 3–4 mm (0.1–0.2 in) wide. The lateral sepals are green, 10–15 mm (0.4–0.6 in) long, about 2 mm (0.08 in) wide and joined to each other for about half their length. The petals are green or purplish, linear to lance-shaped, 8–12 mm (0.3–0.5 in) long, about 2 mm (0.08 in) wide and spread widely. The labellum is white or pinkish-purple, broadly egg-shaped or arrow-head shaped, 7–9 mm (0.3–0.4 in) long, 4–5 mm (0.16–0.20 in) wide, turns upwards and has a slightly wavy edge. There is a greenish, raised callus in the centre of the labellum. Flowering occurs from December to February.[2][3]