Phaius baolocensissp. nov. (Orchidaceae), a new species endemic to the southern highlands of Vietnam

Van Duy Nong,Tao Chen,Dianxiang Zhang

doi:10.5252/a2012n2a4

Abstract

A new endemic species, Phaius baolocensis N. V.Duy, T.Chen & D.X.Zhang, sp. nov. is described and illustrated. This new entity is similar to Phaius tankervilleae (Banks ex L'Hér.) Blume and P. australis var. bernaysii (F. Muller ex Bernays) Nicholls morphologically, from which it differs in having flowers rachis sparsely, lateral sepal narrow elliptic, petal narrow elliptic, lip apex bilobated, spur subcylindric and short.

Highlights

The genus Phaius was established by Loureiro (1790), with Phaius grandiflorus Lour. as generic type
In Vietnam, the genus Phaius has been taxonomically studied by a few authors (Seidenfaden 1992; Tran Hop 1998; Pham 1999), and four species, namely, P. flavus (Blume) Lindl., P. indigoferus Hassk., P. mishmensis (Lindl. & Paxton) Reichb. and P. tankervilleae (Banks ex L’Hér.) Blume had been recognized while Averyanov & Averyanova (2003) recorded six species, viz., P. flavus (Blume) Lindl., P. indochinensis Seidenf. & Ormerod, P. mishmensis (Lindl. & Paxton) Reichb., P. longicornu Guillaum, P. longicruris Tsi and P. tankervilleae (Banks ex L’Hér.) Blume
In January 2011, during an expedition to Dang Rac Village, Di Linh Distr., Lam Dong Province, Southern highland Vietnam, we collected specimens in a private orchid garden of a peculiar flowering Phaius species, which the grower collected from the Bao Loc forest a few years ago

Summary

Introduction

MATERIAL AND METHODSThe genus Phaius was established by Loureiro (1790), with Phaius grandiflorus Lour. as generic type. In Vietnam, the genus Phaius has been taxonomically studied by a few authors (Seidenfaden 1992; Tran Hop 1998; Pham 1999), and four species, namely, P. flavus (Blume) Lindl., P. indigoferus Hassk., P. mishmensis In January 2011, during an expedition to Dang Rac Village, Di Linh Distr., Lam Dong Province, Southern highland Vietnam, we collected specimens in a private orchid garden of a peculiar flowering Phaius species, which the grower collected from the Bao Loc forest a few years ago (our efforts to relocate the population, was in vain).

Results

Conclusion