Bulbophyllum dayanum Rchb. f. 1865
SECTION Acrochaene ( Lindl. ) J.J.Verm. , Schuit. & de Vogel 2014
Photo by © Lourens Grobler
Photo by Bill Bergstrom and Berstrom Orchids
Photo by David Morris
and 
Common Name Day's Bulbophyllum [English Orchid Enthusiast 1800's]
Flower Size 1 1/2" [2 to 3 cm]
Found in India, Myanmar, Cambodia, Vietnam and Thailand in semi-deciduous and deciduous dry lowland forests and savana-like woodlands at elevations of sealevel to 700 to 1300 meters as a miniature sized, warm to cool growing, unifoliate epihyte of wet, shadier, cooler areas with a creeping rhizome, globose to ovoid, channeled pseudobulbs carrying a single, apical, oblong, coriaceous leaf that is deep green above and purple below that blooms in the spring and summer on a basal, very short, 2 to 5 flowered inflorescence with semi-nodding, foul smelling flowers held below the leaves next to the rhizome. This plant needs water lots of it as well as deep shade, in a wood basket with bark and covered with sphagnum moss.
Synonyms Bulbophyllum dyphoniae Tixier 1968; Bulbophyllum hispidum Ridl. 1897 ; Phyllorchis dayana (Rchb. f.) Kuntze 1891
References W3 Tropicos, Kew Monocot list , IPNI ; Xenia Orchidaceae vol 2 Rchb.f 1867 as Bolbophyllum dayanum drawing fide; Refugium Botanicum Reichenbach 1872 drawing fide; The Orchids of Burma Grant 1895/95; Die Orchideen Schlechter 1915; The Orchids of Thailand Seidenfaden & Smitinand 1961 drawing fide; Encyclopedia of Cultivated Orchids Hawkes 1965; AOS Bulletin Vol 37 # 6 1968; Dansk Botanisk Arkiv Bind 33 #3 Orchid Genera in Thailand VIII Bulbophyllum Thou Seidenfaden 1979 drawing fide; Orchids of Penninsular Malaysia and Singapore Seidenfadden and Wood 1992 drawing/photo fide; Manual of Cultivated Orchids Bechtel, Cribb & Laurent 1992; Manual of Orchids Stewart 1995; Miniature Orchids McQueen 1992; Identification of the Orchids [Orchidaceae Juss.] Vietnam Averyanov 1994; Bulbophyllums and Their Allies Seigerist 2001 photo fide; Botanica's Orchids Laurel Glen 2001; A Field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 photo fide; Slipper Orchids of Vietnam Averyanov, Cribb, Loc & Hiep 2003; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo fide; The Wild Orchids in Yunnan Xu Xiang Ye & Liu 2010 photos fide; Wild Orchids of Myanmar Nyan Tun Taunggyi 2014 photo fide; Genera Orchidacearum Vol 6 Epidendroideae Pt 3 Pridgeon, Cribb Chase & Ramussen 2014 photo fide; Wulfenia 22 [2015]: 137 - 188 New Orchids in the Flora of Vietnam Averyanov, Nguyen, Tich, Nguyen, Nong, Nguyen and Xuan photo fide; Atlas of Native Orchids of China Vol 2 Jin Xiaohua, Li Jianwu and Ye Deping 2019 photo fide;
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