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| Bulbophyllum reflexipetalum J.D.Ya, Y.J.Guo & C.Liu, in Ya, Guo, Liu, Cai, Dong, Jiang & Li, 2019. |
Abstract
Bulbophyllum reflexipetalum, a new species from Motuo County, Southeast Xizang, China, is described and illustrated here. This new species belongs to Bulbophyllum sect. Umbellata Bentham & J. D. Hooker, and it is morphologically similar to B. umbellatum Lindley, B. guttulatum (J. D. Hooker) N. P. Balakrishnan and B. salweenensis X.H. Jin, but is distinguished from them by having reflexed petals, base of dorsal sepal with 1 dentate on each side, lip with significantly revolute margin, adaxially with dark brown spots or patches and one longitudinal groove.
Keywords: Taxonomy, Bulbophyllum, Section Umbellata, Xizang Province, China
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| Bulbophyllum reflexipetalum sp. nov. A plant B inflorescence C front view of flower D lateral view of flower E adaxial sepals and petals F front view of labellum G dorsal view of labellum H lateral view of column and lip I front view of column J bract K lateral view of pollinarium L front view of pollinarium M dorsal view of pollinarium N abaxial anther cap O adaxial anther cap (Drawn by Rong-Mei Zhang). |
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| Bulbophyllum reflexipetalum sp. nov. A habitat B plant C inflorescence D front view of flower E lateral view of flower F dorsal view of flower G adaxial sepals and petals H abaxial sepals and petals I lateral view of column and lip J bract K front view of column L dorsal view of labellum M front view of labellum N dorsal view of pollinarium O front view of pollinarium P lateral view of pollinarium Q abaxial anther cap R adaxial anther cap (Photographed by J.-D. Ya). |
Bulbophyllum reflexipetalum J.D.Ya, Y.J.Guo & C.Liu, sp. nov.
Diagnosis: Bulbophyllum reflexipetalum is similar to B. salweenensis X.H. Jin, B. umbellatum Lindley and B. guttulatum (J. D. Hooker) N. P. Balakrishnan in terms of morphological structure and shape of the flowers. The new species can be distinguished from B. salweenensis by the absence of sheaths on the pseudobulbs and rhizome, scape longer than leaf and petals apex mucronate. It can be distinguished from B. umbellatum with smaller and flattened void or ovoid-conic pseudobulbs, shorter leaf blade, petals apex caudate. In addition, the new species can be distinguished from B. guttulatum with leaf blade oblong and apex emarginated, shorter pedicel and ovary, lip papillae with a single longitudinal ridge.
Etymology: The specific epithet “reflexipetalum” refers to reflexed petals of this new species.
Vernacular name: Fan Ban Juan Ban Lan (Chinese pronunciation); 反瓣卷瓣兰 (Chinese name).
Ji-Dong Ya, Yong-Jie Guo, Cheng Liu, Jie Cai, Gui-Jun Dong, Hong Jiang and De-Zhu Li. 2019. Bulbophyllum reflexipetalum (Orchidaceae, Epidendroideae, Malaxideae), A New Species from Xizang, China. In: Cai J, Yu W-B, Zhang T, Li D-Z (Eds) Revealing of the plant diversity in China’s biodiversity hotspots. PhytoKeys. 130: 33-39. DOI: 10.3897/phytokeys.130.34153
