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

Compatible with
CODE

NEWS > NEW PLANTS

The genus Cypripedium (Orchidaceae) in the flora of Vietnam

Last modified on 27/7/2017 at 3:19:00 PM. Total 36 views.

On Turczaninowia 20 (1), the authors include Prof. L. V. Averyanov (Komarov Botanical Institute, RAS), C. X. Canh (Center for Plant Conservation, Vietnam), N. H. Tuan (Hanoi University of Pharmacy), V. A. Phu (Center for Plant Conservation, Vietnam), K. S. Nguyen (Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology), T. H. Nguyen (Center for Plant Conservation, Vietnam) and T. V. Maisak (Komarov Botanical Institute, RAS) have introduced about the genus Cypripedium (Orchidaceae) and 2 new record species for the flora of Vietnam

Two species are Cypripedium subtropicum S.C.Chen & K.Y.Lang and Cypripedium lentiginosum P.J.Cribb & S.C.Chen .

The record of C. subtropicum in Sin Ho district  of  Lai  Chau  province  of  northwestern Vietnam  presented here is new for the flora of the country.  Early record in northern Vietnam in Ha Giang  province is based on literature data (Jiang, Liu,  2009). Description of C. singchii (Liu, Chen, 2009)  is based on material collected in the same place  and probably from the same population (Jiang, Liu,  2009).

With the species as Cypripedium lentiginosum, it is one of the most sensitive elements  of  primary  open  limestone  forests  and  scrub  associated with a specific set of habitat conditions,  such as rocky high elevations, nutrient availability,  mossy steep slopes and permanent humidity. Such  forests are critically endangered in the area and  occupy presently miserable table-like summits of  karstic remnant limestone hills or ridges surrounded  typically by vertical cliffs. This unique kind of  vegetation composed with many aboriginal species  disappears very fast due to timber exploitation,  forest fires, urbanization, soil erosion and climate  drought connected with wide deforestation. This species was claimed that growing in Quan Ba (Ha Giang).

Cypripedium subtropicum S.C.Chen & K.Y.Lang

Habitat, phenology and conservation status. 

Terrestrial rhizomatous herb. Primary and secondary  broad-leaved evergreen and semideciduous forests  (commonly with Alnus nepalensis D. Don) on steep  slopes composed with soft shaly limestone, often  along rocky stream valleys on moist alluvial well  drained thin soils rich in humus.  (1000)1400– 1600 m a. s. l. Fl. July–August.

Very rare.

Estimated  IUCN Red List status – EN.

Distribution

Southwestern and southern  China: southeastern Tibet (Medong county) and  southeastern Yunnan (Malipo county), northern Vietnam: Ha Giang (Quan Ba district) and Lai Chau  (Sin Ho district).

Cypripedium subtropicum on cypripedioideae-e-monocot.jpg at www.BotanyVN.com

Cypripedium subtropicum on Cypridioideae-e-monocot.org

Cypripedium subtropicum on Turczaninowia 20(1) - 1.jpg at www.BotanyVN.com

Cypripedium subtropicum on Turczaninowia 20(1)

Cypripedium subtropicum on Turczaninowia 20(1).jpg at www.BotanyVN.com

Cypripedium subtropicum on Turczaninowia 20(1)

 

Cypripedium lentiginosum P.J.Cribb & S.C.Chen

Habitat, phenology and conservation status.

Terrestrial  and  lithophytic  rhizomatous  herb. Primary  and  secondary  broad-leaved  evergreen open forests and thickets on rocky steep slopes and mossy boulders just below ridges composed with solid karstic limestone, commonly in grassy places on wet, well drained soils rich in humus. 2100–2300 m a. s. l. Fl. May–June.

Very rare.

Estimated IUCN Red List status – EN.

Distribution.

Southern China: southeastern Yunnan (Malipo and Pingbian counties),

Vietnam: northwestern Ha Giang (Quan Ba district);

Cypripedium lentiginosum on Orchidspecies.jpg at www.BotanyVN.com

Cypripedium lentiginosum on Orchidspecies

(Turczaninowia 20 (1))

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

READ MORE FROM AMAZON

    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 2007-2017