Bulbophyllum thiurum Vermeulen & O'Byrne 2005 SECTION Plumata

Lip Detail Photo by Pieter C. Brouwer and his Nature Photo Website


Common Name

Flower Size 4" [10 cm] long long

Found in Endau Rompin National Park in penninsular Malaysia in lowland swamp forests on trees as a miniature sized, hot growing epiphyte with a creeping rhizome with .48 to .92" [1.2 to 2.3 cm] betweeen each dstant, ovoid, obtuselt 3 to 4 angled pseudobulb carrying a single, apical,erect, elliptic to ovate, obtuse, petiolate base leaf that blooms in the later winter and early spring on an ascending, peduncle to 4" [10 cm] long, provided with about 5 bracts, rachis nodding, somewhat thickened, .048" [1.2 mm] long, to 8" [20 cm] long overall, subumbellate, 3 to 4 flowered inflorescence with acute, longer than the ovary floral bracts carrying pendent flowers

This species is most likely extinct in the wild.

"Most similar to B plumatum but the new species differs in the lateral sepals fused close to the base only and along the the upper as well as the lower margins. B plumatum on the other hand are fused along a considerable part of their length but along the upper margin only. The lateral sepal shape is different as well, wide and ovate in B thiurum tapering into a caudate top part, but in B plumatum it is strap shaped and barely widened near their base. B thiurum has hair like appendages on the petals and alomst hair-like vesicles near the top. In B plumatum all vesicles up to the tip of the appendage are rounded." J J Verm & P O'Byrne 2005


References W3 Tropicos, Kew Monocot list , IPNI ; *Gard. Bull. Singapore 57: 136 J J Verm & P O'Byrne 2005 photo fide; Bulbophyllum: the incomplete Guide From A to why? Bill Thoms 2009 photo fide; A to Z of South East Asian Orchid Species Vol 2 O'Byrne 2011 photo fide; Orchid Digest Vol 77 #2 2013 photo fide; A Compendium of Miniature Orchid Species Gerritsen and Parsons 2013 photo fide