Bulbophyllum layae Aver. & Vuong 2019 SECTION Cirrhopetalum [Lindl.] Rchb.f 1861

Photo by T. Ba Vuong and Phytotaxa 404 (6): 231244 Aver. & Vuong 2019 New species of Bulbophyllum (Orchidaceae) in the flora of Vietnam II

Common Name Lay's Bulbophyllum [Vietnamese mother of Truong Ba Vuong 2nd author of the new species current]

Flower Size 1 to 1.2" [2.5 to 3 cm]

Found in northern Vietnam in evergreen broad-leaved humid forests in limestone environs at elevations around 500 to 1500 meters as a small sized, warm to cool growing epiphyte with a branching rhizome giving rise to close set, erect, ovoid-globose, wrinkled, squat, subtly tetragonal to many angled pseudobulbs carrying a single, apical, erect, ovate-elliptic to oblong-lanceolate, obtuse apically, subsessile base leaf that blooms in the summer on an erect to lateral, filiform, basal, .32 to .48" [8 to 12 mm] long, provided basally with 2 to 3, small, dark brown, papyraceous, acute tubular sheaths, rachis very short, .016 to .024" [.4 to .6 mm] long, umbellate, simultaneously 1 to 5 flowered inflorescence with narrowly triangular, acute, as long as the ovary floral bracts.

Similar to the wide-spread B pecten-veneris differs in short inflorescence scape, as long, or little longer than flowers (vs. scape much longer than flowers), small flowers 1 to 1.2" [2.5 to 3 cm] long (vs. flowers more than 1.6" [4 cm] long) and dense setose white hairiness of basal half of the lip (vs. lip with no hairs).

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; * Phytotaxa 404 (6): 231244 Aver. & Vuong 2019 New species of Bulbophyllum (Orchidaceae) in the flora of Vietnam II Drawing/photo fide

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