Thrixspermum triangulare Ames & C.Schweinf. 1920 SECTION Thrixspermum
Photo by © Gary Meyer and The Swiss Orchid Foundation at the Jany Renz Herbarium Website
Photo by J B Comber
Photo courtesy of André Schuiteman, Dr. E.F. de Vogel and Jaap Vermeulen and Their Netherlands National Herbarium Website
Common Name or Meaning The Triangular Thrixspermum [refers to the triangular callus on the lip]
Flower Size 1.2" [3 cm]
Found only in north Borneo in lower and upper montane forests on tree roots, branches and rocks at elevations of 1200 to 3400 meters as a small sized, cool to cold growing epiphyte or lithophyte with an unbranched stem enveloped completely by leaf-bearing sheaths and carrying several distichous, spreading, linear-lanceolate, linear or ligulate, coriaceous, rigid, fleshy, mid-nerve sharply carinate beneath, unequally obliquely or equally obtusely bilobed apically, narrowing below slightly into the conduplicate base leaves attenuate to the striate-nervose sheaths that blooms at any time of the year on an axillary, spreading to ascending, 9" [22.5 cm] long, laterally flattened, fractiflex, erect then arcuate, slightly fleshy inflorescence with ovate, obtuse, clasping bracts and distichous, equitant, ovate-triangular, subacute to obtuse, strongly complanate, broadly keeled dorsally, clasping, cymbiform floral bracts that carries the single successively opening, several to many flowers.
Synonyms
References W3 Tropicos, Kew Monocot list , IPNI ; The Plants of Mount Kinabalu Vol 2 Orchids Beaman, Wood, Beaman & Beaman 1993 photo fide; The Plants of Mount Kinabalu Vol 2 Orchids Beaman, Wood, Beaman & Beaman 1993 as T aff triangulare; The Orchids of Borneo Vol 1 Chan Lamb Shim & Wood 1994; A Checklist of the Orchids of Borneo Wood & Cribb 1994; Orchids of Borneo Wood Vol 4 2003 drawing/photo fide; Malesian Orchid Journal Vol 5 2010; The Orchids of Mount Kinabalu Vol 1 Wood, Beaman, Lamb, Chu Lun and Beaman 2011 drawing/photo fide; The Orchids of Mount Kinabalu Vol 2 Wood, Beaman, Lamb, Chu Lun and Beaman 2011
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