Bulbophyllum helenae J.J. Sm. 1912 SECTION Rhytionanthos [Garay, Hamer & Siegerist] J J Verm, Schuit & De Vogel 2014

TYPE for the section Photo by The Orchid Photo Website.

another flower Photo by Richard Ashby and hisOrchid Photo Website.

Different Flower Angle Photo courtesy of David Jubineau and His Bulbophyllum Pages Copyright

UNPLEASANTFragrancePart shade Cold to Warm LATER Spring Summer

Common Name Helen's Bulbophyllum - In China Jiao E Juan Ban Lan

Flower Size 1 3/5" [4 cm]

Found in the western Himalayas, Nepal, Sikkim, Myanmar and Thailand in montane forests as a small sized, warm to cold growing epiphyte or lithophyte at elevations of 800 to 2700 meters with 1.2 to 2.4" [3 to 6 cm] between each long-ovoid pseudobulb carrying a single, apical, erect, coriaceous, oblong, narrowing below into the petiolate base leaf that blooms in the later spring and summer on a basal, 2 to 3 [5 to 7.5 cm] long inflorescence with imbricate, tubular sheaths and narrowly lanceolate, acute floral bracts and carrying 5 to 9 stinky flowers.

This cute orchid requires shade, very humid conditions and regular water and fertilizer year round.

This species and B forrestii are very similar but differ mostly in the erose dorsal sepal found in this species and the entire margin dorsal sepal of B forrestii

This species and B nodosum but it differs in having nodular swellings on the thick rhizome and has somewhat larger sepals.

Synonyms Bulbophyllum cornutum (Lindl.) Rchb. f. 1864; Cirrhopetalum cornutum Lindl. 1838; Phyllorchis cornuta (Lindl.) Kuntze 1891; Phyllorchis helenae Kuntze 1891; Rhytionanthos cornutum [Lindl.] Garay, Hamer, $ Siegerist 1994

References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Sikkim-Himalaya Part 1 King & Pantling 1898 as Cirrhopetalum cornutum drawing ok; Notes on Cirrhopetalum Seidenfadden 1973 drawing fide; Orchid Genera in Thailand Vol VIII Bulbophyllum Thou. Seidenfaden 1979 drawing fide; Indian Orchids Guide to Identification and Culture Pradhan 1979 drawing fide; Orchid Digest Vol 44 No 4 1980 as Cirrhopetalum cornutum photo/drawing fide; Orchids of Arunachal Pradesh Hegde 1984 photo good; Orchids of Northwest Himalaya Deva & Naithani 1986 drawing fide; Orchids of Kumaun Himalayas Pangtey, Samant and Rawat 1991; Orchids of Nagaland Deorani & Naithani 1995 drawing good; Wild Orchids of China Tsi, Chen Mori 1997 photo fide; Native Orchids of China in Colour Singchi, Zhanhuo and Yibo 1999 photo fide as Bulbophyllum helenae; Orchids Of India II Biodiversity & Status of Bulbophyllum Thou Augustine & Kumar 2001 as Rhytionanthos cornutum; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 as Rhytionanthos cornutum photo fide; Bulbophyllum and Their Allies Seigerist 2001 as Rhytionanthos cornutum; Orchids of Bhutan Pearce & Cribb 2002; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 as Rhytionanthum cornutum photo fide; Orchids of India A Glimpse Misra 2007 as Rhytionanthe cornutum photo fide; Flora of China Vol 25 Zhengyi, Raven & Deyuan 2009; Flora of China Vol 25 Illustrations Zhengyi, Raven & Deyuan 2010 drawing fide; A Field Guide to the Orchids of China Singchi, Zhongjian, Yibo, Xiaohua and Zhanhuo 2009 photo fide; The Wild Orchids in Yunnan Xu Xiang Ye & Liu 2010 photos fide; Bulbophyllum of Borneo J J Verm, P O'Byrne and Lamb 2015;

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