Pterostylis robusta R.S.Rogers 1927 SECTION Diplodium Photos by John Varigos and his Orchid webpage

Flower in situ Photo courtesy of Cathy Powers and herAUSTRALIAN TERRESTRIAL ORCHIDS OTHER FLORA & FAUNA BANJORAH Website

and

Common Name The Robust Pterostylis - In Australia The Large Striped Pterostylis - The Sharp Leafed Greenhood

Flower Size 1 1/4" [3 cm]

Found in New South Wales, Victoria and South Australia in drier forests on hills amd ranges and in mallee shrublands at elevations of 5 to 600 meters as a small sized, cold to cool growing terrestrial orchid occuring in poor soils growing in sheltered situations with a rosette of dark green, flat to crinkled leaves that blooms in the fall and winter on an erect, 2 to 8" [5 to 20 cm] long, single flowered inflorescence.

Synonyms Diplodium robustum (R.S.Rogers) D.L.Jones & M.A.Clem. 2002; Pterostylis alata var. robusta (R.S.Rogers) J.Z.Weber & R.J.Bates 1978; Pterostylis alata var. robusta (Ewart) Tovey & P.Morris 1922; Pterostylis praecox var. robusta Ewart 1916; Pterostylis scabra var. robusta A.S.George 1971

References W3 Tropicos, Kew Monocot list , IPNI ; AOS Bulletin Vol 38 No 6 1969; Native Orchids of Australia Jones 2006 as Diplodium robustum photo good

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