Bulbophyllumchrysolabium (Orchidaceae, Epidendroideae, Malaxideae), a new species from Yunnan, China.

Song-Jun Zeng,De-Ping Ye,Lin Li

doi:10.3897/phytokeys.111.28136

Song-Jun Zeng, De-Ping Ye + Show 1 more

Open Access

https://doi.org/10.3897/phytokeys.111.28136

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Abstract

Bulbophyllumchrysolabium, a new species belonging to section Racemosae from Yunnan, China is described and illustrated. The species is related to B.orientale and B.morphologorum, but differs by having the following set of characters: obliquely broadly-based triangular petals with a long filiform apex; lip densely glandular papillose and conspicuously ciliolate along margins; lip auricles well developed, narrowly falcate, tapering to a long sharp point at the apex; stelidia subulate and twisted inwards, slightly exceeding operculum. The conservation status of B.chrysolabium is assessed and taxonomic notes are provided.

Highlights

Based on phylogenetic studies, all genera previously proposed in subtribe Bulbophyllinae were formally transferred to Bulbophyllum Thou. (Vermeulen et al 2014)
Bulbophyllum chrysolabium is distinguished from all known congeners by having the following unique combination of features: obliquely broadly-based triangular petals with a long filiform apex; lip densely glandular papillose on both sides
There is limited data to determine its actual distribution range, biology and threats, the current available information led us to assign a preliminary status of Critically Endangered [CR B2ab(iii)] according to the IUCN Red List Categories and Criteria (IUCN 2017)

Summary

Introduction

Based on phylogenetic studies, all genera previously proposed in subtribe Bulbophyllinae were formally transferred to Bulbophyllum Thou. (Vermeulen et al 2014). Bulbophyllum chrysolabium is distinguished from all known congeners by having the following unique combination of features: obliquely broadly-based triangular petals with a long filiform apex; lip densely glandular papillose on both sides Bulbophyllum chrysolabium, a new species from Yunnan, China and conspicuously ciliolate along margins; lip auricles well developed, narrowly falcate, tapering to a long sharp point at the apex; stelidia subulate and twisted inwards, slightly exceeding operculum.

Results

Conclusion