Thrixspermum tubulatum P.O'Byrne 2016 SECTION Dendrocolla

TYPE Drawing

TYPE Drawing by Peter O'Byrne

Common Name The Trumpet Shaped Thrixspermum

Flower Size .6 to .72" [1.5 to 1.8 cm]

Found in Sabah Borneo lowland forests on riverside trees at lowelevations as a mini-miniature sized, hot growing epiphyte with spreading stems enveloped by slightly compressed, green, persistent, longer than the internodes sheaths and carrying distichous, oblong to strap-shaped, thick, green purple suffused in youth, unequally bilobed, obtuse leaves that blooms in the fall on many, suberect, arising from the lower and middle nodes of the stem, green to brown to maroon, peduncle 2 to 72" [5 to 18 cm] long, provided with 2 tubular, basal bracts and 2 more along the length, stiff & wiry, slightly expanded before the rachis, rachis swollen, to 1.12" [2.8 cm] or more, successively 1, several flowered inflorescence with crowded, triangular, keeled, the keel extended to form a free standing acerose pointed apex, hel parellel and close to the rachis, wheat-like, shorter than the ovary floral bracts and carrying ephemeral, widespread flowers.

"Similar to T tenuicalcar but T tubulatum differs in the rachis which resembles a head of wheat, the narrow tepals, the lip that is indistinctly 3 lobed at the apex and the spur that is indistinctly narrrowed in the distal half." O'Byrne 2016.


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