Monday, October 30, 2017

[Botany • 2017] Coelogyne magnifica • A New Species (Orchidaceae) from northern Myanmar


Coelogyne magnifica Y.H. Tan, S.S. Zhou & B. Yang

in Yang, Zhou, Liu, Maung, Li, Quan & Tan, 2017

Abstract
Coelogyne magnifica (Orchidaceae), a new species from Putao, Kachin State, Myanmar, is described and illustrated. It belongs to Coelogyne section Ocellatae Pfitzer & Kraenzl. and it is morphologically similar to Coelogyne corymbosa and C. taronensis, but can be distinguished from these species by its larger flowers, lanceolate sepals and petals, a narrowly ovate lip, which has two bright yellow patches surrounded by shiny brownish red and two fimbriate or erose-lacerate lateral keels on the lip. The major differences between these species are outlined and discussed.

Keywords: Kachin state, section Ocellatae, key, plant taxonomy, IUCN, Hponkan Razi



Coelogyne magnifica Y.H. Tan, S.S. Zhou & B. Yang, sp. nov.

Diagnosis: Coelogyne magnifica is similar to C. corymbosa and C. taronensis, but can be distinguished from these two species by its larger flowers (tepals 4.0–4.9 cm long), broadly lanceolate sepals and petals, narrowly ovate lip, which has two bright yellow patches surrounded by shiny brownish red and two fimbriate or erose-lacerate keels on the lip.
  

Figure 2. Coelogyne magnifica Y.H. Tan, S.S. Zhou & B. Yang sp. nov.
AD Habit E Anther cap (abaxial view) F Anther cap (adaxial view) G Tepals H Column (adaxial view) I Column (abaxial view) J Column (lateral view) K Lip (adaxial view, showing the two lateral keels and two patches) L Lip (abaxial view) M Pollinia.
Photographed by Y.H. Tan, Q. Liu & X.L. Zeng.

Etymology: The species epithet refers to its large attractive flowers.

Distribution and habitat: Coelogyne magnifica is currently known only from the type locality of Putao, Kachin State, northern Myanmar. It is a predominantly epiphytic species that grows on moss-covered branches and tree trunks and sometimes also on rocks, in humid montane forests, at an elevation 2400–2500 m a.s.l.


Bin Yang, Shi-Shun Zhou, Qiang Liu, Kyaw Win Maung, Ren Li, Rui-Chang Quan and Yun-Hong Tan. 2017. Coelogyne magnifica (Orchidaceae), A New Species from northern Myanmar. PhytoKeys. 88: 109-117.  DOI:  10.3897/phytokeys.88.19861

  

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