Pterostylis revoluta R. Br 1810 SECTION Diplodium Photo by © John Varigos and His Orchid webpage
Side View Of Flowers Photos byColin Rowan
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Common Name The Backbent Pterostylis - In Australia The Large Autumn Greenhood
Flower Size 1 3/4" [4.5 cm]
Widespread across Queensland, New South Wales and Victoria, Australia on slopes and ridges in drier open forest and woodland, often in shallow stony soils at lower elevations as a small sized, cool to cold growing terrestrial orchid with a basal, rosette of grey-green to bluish, flat, obovate to ovate, rarely lanceolate, long slender petiolate base leaves that blooms in the Australian summer and fall on an erect, 4 to 6" [10 to 15 cm] long, single flowered inflorescence.
Synonyms Arethusa tetrapetala R.Br. ex Britten 1909; Diplodium revolutum ( R.Br. ) D.L.Jones & M.A.Clem. 2002; Pterostylis speciosa T.E.Hunt 1958
References W3 Tropicos, Kew Monocot list , IPNI ; AOS Bulletin Vol 26 No 10 1957; AOS Bulletin Vol 38 No 6 1969; Orchids of Australia Nicholls 1969 drawing fide; Native Orchids of Australia Jones 2006 as Diplodium revolutum photo good
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