Thrixspermum rubrocalcaratum P.O'Byrne & Gokusing 2016 SECTION Dendrocolla

TYPE Drawing

TYPE Drawing by Peter O'Byrne


Common Name The Red Spurred Thrixspermum

Flower Size .44" [1.1 cm]

Found in Sabah Borneo in mossy low Dacrydium-Leptospermum forests at elevations around 1890 meters as a miniature sized, cool growing epiphyte with erect stems enveloped by compressed, greenish-brown, suffused and spotted with red maroon, persistent, longer than the internodes sheaths and carrying distichous, strap-shaped, thick, green pink-purple suffused and spotted with red maroon, unequally bilobed, acute leaves that blooms in the later fall on a few, suberect, arising from the lower nodes of the stem, peduncle 1.88 to 2.8" [4.7 to 7 cm] long, provided with 2 tubular, basal bracts and another midway, becoming warty and much expanded before rachis, purple, rachis swollen, to .4" [1 cm] or more, successively 1, several flowered inflorescence with quaquaversal, not crowded, basally clasping rachis, triangular, free part recurved, thick and fleshy, acute apex, slightly shorter than the ovary floral bracts and carrying ephemeral flowers.

Similar to T semiteretifolium but T rubrocalcaratum differs in the dorso-ventrally compressed leaves, amd the lip with a straight spur and a midlobe that is longer than the sidelobes.


References W3 Tropicos, Kew Monocot list , IPNI ; *Malesian Orchid Journal Vol 18 2016 drawing/photo fide;