Habenaria hilsenbergii Ridl. 1885
Photo by © G Gilles and The Paleo-Orchid WebPage
Photo by © David Roberts
LATER 
EARLY 
Common Name Hilsenberg's Habenaria
Flower Size
Found in Madagascar in rocky prairies at elevations of 1000 to 2000 meters as a medium sized, cool growing terrestrial with 2 rounded to more or less elongate tubers giving rise to an erect stem enveloped basally by sheaths and carrying 5 to 10 rigid, ascending, basally clasping, acute apically leaves that blooms in the later summer and early fall on a terminal, erect, cylindrical, many flowered inflorescence.
Synonyms Habenaria ankaratrana Schltr. 1924; Habenaria atra Schltr. 1916
References <W3 Tropicos, Kew Monocot list , IPNI ;
* J. Linn. Soc., Bot. 21: 509 Ridley 1885
Beih. Bot. Centralbl. 34(2): 314 Schlechter 1916 as J atra
Repert. Spec. Nov. Regni Veg. Beih. 33: 87 Schlechter 1924 as H ankaratrana;
Repert. Specierum Nova. Regni Vegetabilis Band 33: 88 Schlechter 1925 as H atra;
Repert. Specierum Nova. Regni Vegetabilis Band 33 Schlechter 1925;
Flora of Madagascar fam 49 : 57 Perrier 1939
Flora of Madagascar fam 49 : 51 Perrier 1939 drawing good;
Field Guide to the Orchids of Madagascar Cribb & Hermans 2009 photo not fide to D Roberts photoabove;
Les Orchidees de Madagascar Bosser & Lecoufle 2015 photo fide;
A la Recherche des Orchidees de Madagascar Hervouet 2018 photo fide Fide to G Gilles photo;
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