Micropera callosa (Blume) Garay 1972

Photo by J.B.Comber and The Swiss Orchid Foundation at the Jany Renz Herbaria

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Common Name The Cauloused Micropera [refers to having a callus]

Flower Size .4" [1 cm]

Found in Borneo, Java and Sumatra in hill forests at elevations of sea-level to 300 meters scrambling over tree branches overhanging rivers and streams or climbing up tree trunks on roadsides as a large sized, hot growing, monopodial epiphyte or sometime terrestrial with climbing stems carrying 2 ranked, strap-shaped, apically shallowly and unevenly bilobed leaves that blooms in the spring, summer and fall with an erect, racemose to sometimes single branched, 4.8 to 7.2" [12 to 18 cm] long, few to several flowered inflorescence with shortly triangular floral bracts and carries a few to several, non-resupinate flowers with 4 to 5 open at any one time.

This species is best grown in a basket to contain the scrambling growth habit.

Synonyms Camarotis callosa (Blume) J.J. Sm. 1912; *Cleisostoma callosum Blume 1825; Sarcanthus callosus (Blume) Rchb.f. 1857

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1855 as Cleisostoma callosa; Die Orchideen Von Java J.J.Sm. 1905 as Sarcanthus callosus; Die Orchideen Von Java Figuren Atlas J.J.Smith 1908 as Sarcanthus callosus drawing fide; Orchids of Java Comber 1990 photo ok; The Plants of Mount Kinabalu Vol 2 Orchids Beaman, Wood, Beaman & Beaman 1993 photo fide; A Checklist of the Orchids of Borneo Wood & Cribb 1994; Orchids of Sumatra Comber 2001 photo ok; Orchids of Sarawak Beeman & Wood 2001 photo fide; A to Z of South East Asian Orchid Species Vol 1 O'Byrne 2001 photo fide; Orchids of Sarawak Beaman, Wood & Beaman etal 2001; The Orchids of Mount Kinabalu Vol 2 Wood, Beaman, Lamb, Chu Lun and Beaman 2011 drawing/photo fide; Genera Orchidacearum Vol 6 Epidendrodeae Pt 3 Pridgeon, Cribb, Chase and Rasmussen 2014 drawing fide