HomePage   News&Events   Database    Register   About Us   Search: 
Infinite Menus, Copyright 2006, OpenCube Inc. All Rights Reserved.

Compatible with

NEWS > NEW PLANTS

Checklist of mycoheterotrophic species of the genus Exacum (Gentianaceae) and new species, E. zygomorpha, from northern Vietnam

Last modified on 6/11/2014 at 10:32:00 AM. Total 790 views.

The paper provides a key for identification and a checklist of mycoheterotrophic species of the genus Exacum, representing a well-defined group of achlorophyllous members of Gentianaceae regarded sometimes in the limits of a separate genus Cotylanthera. One novel species, E. zigomorpha, discovered in northern Vietnam, is described and illustrated as new for science. Among other features the discovered species strikingly differs from its congeners in having distinctly zygomorphic flowers.

Small achlorophyllous herb with erect, slender, branched stem; leaves, opposite, scale–like; flowers hardly opening, white, asymmetric; calyx decussate, bisymmetric, 1–1.2 cm across; corolla of 4 petals, 1–1.2 cm long, zygomorphic; petals narrowly oblong, 2.5–3 mm wide, joined at the base; androecium slightly zygomorphic, one-side turned; anthers yellow, 4 × 1 mm long; ovary of 2 carpels, 1-locular, almost globular 1.5 mm in diam.; style thread-like, 8–8.5 mm long; stigma entire.


Leonid V. Averyanov, Khang Sinh Nguyen, Hiep Tien Nguyen
For final version please see at:  http://biotaxa.org/Phytotaxa/article/view/phytotaxa.183.2.3
http://www.mapress.com/phytotaxa/content/2014/f/p00183p113f.pdf

(from phytotaxa)

Rating:       Google Bookmarks Facebook sharing Twitter sharing   Email     Print it     Comment

READ MORE FROM AMAZON

NEWER POSTED ARTICLES:
PREVIOUSLY POSTED ARTICLES:
NEWEST ARTICLES


MOST VIEWED

READ MORE FROM AMAZON

WEBSITE LINKS

 
 
 
 
 
 
 

TAGS CLOUD

BVN - BotanyVN - Botany Research and Development Group of Vietnam
(©) Copyright 2007-2020