Pterostylis caulescens L.O.Wms. 1946

Plant and Flower in situ New Guinea Photos courtesy of © Dr. E.F. de Vogel, and André Schuiteman and Their Netherlands National Herbarium Website

Full shade Cold Fall THROUGHSpring

Common Name The Stem Forming Pterotstylis [refers to the plants capacity to branch out underground to form an offshoot]

Flower Size 2" [5 cm] tall

Found in New Guinea in mossy montane and subalpine forests at elevations of 2750 to 3660 meters as a miniature to small sized, cold growing epiphyte [more common] or terrestrial in deep shade without a basal rosette of leaves and an erect, flexuous stem carrying 1 to 2, elliptic to elliptic-lanceolate, acute, membraneous, tapering below into the channeled, elongate, petiolate base leaves that blooms in the fall through spring on an erect, terminal, single flowered inflorescence.

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of the High Mountains of New Guinea P. Van Royen 1979; Flora Malesiana: Orchids of New Guinea Vol 5 Schuiteman & D de Vogel 2008

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