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Pterostylis
Also called Greenhood, Greenhoods
Pterostylis is a genus of about 300 species of plants in the orchid family, Orchidaceae. Commonly called greenhood orchids, they are terrestrial, deciduous, perennial, tuberous, herbs found in Australia, New Zealand, New Guinea, New Caledonia and one Indonesian island. The flowers are mostly green, sometimes with brown, reddish or white stripes, and are distinguished from other orchids by their unusual flower structures and pollination mechanism.
Orchids in the genus Pterostylis occur mostly in Australia but are also found in New Zealand, including some of its smaller islands such as Chatham Island, and in New Caledonia, New Guinea, New Britain, New Ireland and on Seram Island in Indonesia. In Australia they are found in all states and Lord Howe Island, but not in the Northern Territory. They grow in a wide range of habitats, especially in temperate zones and are found in grassland, heath, scrub, woodland and forest, including rainforest. They sometimes grow in semi-arid areas but usually near rocks or crevices where there is run-off during rain. In tropical regions they tend to grow at higher altitudes where temperatures are lower. Most have periods of dormancy which coincide with climatic extremes, surviving as small tubers until favourable conditions return.
Tablelands greenhood · Needle-point rustyhood · Pterostylis actites · Sharp greenhood · Long-tongued summer greenhood · Kauri Greenhood · Sutton Grange Greenhood · Striped greenhood · Shy greenhood · Winter Greenhood · Alpine greenhood · Coastal greenhood
Text excerpted from the Wikipedia article Pterostylis by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
