Bulbophyllum fenestratum J.J. Sm. 1907 SECTION Cirrhopetalum Photo courtesy of Jo Levy Copyright , Leslie Garay Archives

Flower Closeup Photos courtesy of Bob Fallon Copyright , and the Dr Leslie Garay Archives

Common Name The Window Bulbophyllum [refers to the hole formed by the sepals]

Flower Size .4" [1 cm]

Found in Thailand, penninsular Malaysia, Sumatra, Java and Borneo in rather open, dry primary forests at elevations of 100 to 1100 meters as a small sized, hot to cool growing epiphyte with .8 to 6.4" [2 to 16 cm] between each distinct, ovoid to ellipsoid, distinctly four angled pseudobulb carrying a single apical, erect, obovate, obtuse to acute, petiolalte base leaf that blooms on an erect to patent, peduncle 3.2 to 4.8" [8 to 12 cm] long, rachis porrect to curved, [9 to 13 cm] long overall, subumbellate, 7 to 15 flowered inflorescence

Often cited as a synonym of Cirrhopetalum taeniophyllum (Parish & Rchb. f.) Hook. f. 1896 but that species is in the section Rhytionanthos and it does not have a tooth on the inner surface of the stelida and the lip widens more gradually towards its base and has distinct ridges on its adaxial side. Verm & O'Byrne 2015

Verm & O'Byrne add B dentiferum as a synonym of this species but I have left them separate pending better references.

Synonyms Cirrhopetalum fenestratum (J.J. Sm.) Garay, Hamer & Siegerist 1994

References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Thailand Seidenfaden & Smitinand 1959; Notes on Cirrhopetalum Seidenfaden 1973 as Cirrhopetalum taeniophyllum; Bulbophyllum of Borneo J J Verm, P O'Byrne and Lamb 2015 photos/drawing fide;

----------------------------------------------------------------------------------------------------------