Page 246 - e-Book
P. 246

(2000).  The  Indian  subcontinent  is  also  considered  primary/secondary  center  of  origin  for

               orchids. Majority of Indian orchids are found in North eastern region followed by Western
               Ghats due to high rainfall and humidity. Orchidaceae was regarded as the largest family of

               flowering plants (in terms of species number) in British India which included Myanmar and
               Bangladesh.    Sir  J.  D.  Hooker  (1888  -  1890),  described  1600  species  from  the  erstwhile

               British  India.  Hooker  (1895)  also  published  an  illustrated  account  of  100  Indian  orchid
               species.  Western  ghats  includes  approximately  300  species  and  northern  western  ghats

               include  99  species  (Satish  et  al,  2010).  In  Karnataka  approximately  176  species  has  been

               mentioned (Ananda Rao T, 2007 & S.Sridhar). In Western Ghats there are approximately 5
               vandas i,e Vanda testaceae  Lindl. Reichb., Vanda thwaitesii Hook., Vanda wightt Rchb.f.,

               Vanda spathulata (L.) Spreng., vanda tessellata (Roxb) Hook. ex. G. Don.

                       As the informational sources, the work on Vanda wightii Rchb.f. reported from India
               and Sri-Lanka is one among the 40 species of Vandas distributed in the Indo-Malayan region

               (Limansela et.al., 2002). It is originally described by Raichenbach.f (1864) based on Robert
               Wight’s collection from Vaulyar and Palghatcherry (1849) and Thwaite’s collection from Sri

               Lanka (Satheeshkumar et al., 2006). It is supposed to be extinct as it has not been re-sighted
               in  the  wild  ever  since  Wight’s  collection  (Limansela  et  al.,  2002).    Later  during  2000-02

               periods the species is re-collected from Belthangady and Subramanya in Dakshina Kannada

               district  of  Karnataka;  Nidiyanga  in  Kannur  and  Melattur  near  Palakkad  district  of  Kerala
               (Satheeshkumar et al., 2004). The species is described as distributed in narrow pockets with

               restricted  numbers  and  later  under  section  38  of  the  Biological  Diversity  Act  2002,  the
               Central  Government  notified  that  Vanda  wightii  is  on  the  verge  of  extinction  and

               prohibited/regulated  collection  along  with  other  25  plant  species  from  Western  Ghats
               (Ministry on Environment and Forests, Government of India, 2009). The ministry also called

               for studies on all aspects of the notified species for holistic understanding and propagation of

               the species for the purpose of in situ and ex situ conservation and rehabilitation. In Karnataka
               Vanda wightii distributed in Subrmanyam, Beltangdi, Manglapuram (Satish et al,2006).

                       According  to  S.K.Barik,  (2018)  Orchidaceae  family  is  highest  threatened  in  India

               which  is  644  species.  Recently,  the  Conservation  Breeding  Specialist  Group  (CBSG)  of
               Species Survival Commission developed an assessment methodology for the medicinal plants

               known  as  CAMP  (Conservation  Assessment  and  Management  Prioritization),  and
               successfully  assigned  threat  status  to  several  taxa  in  India.  In  addition,  Environmental

               Information  System  (ENVIS)  of  Ministry  of  Environment.  Forests  and  Climate  Change
               (MoEF & CC), State Biodiversity Boards and IUCN Red List of Threatened Species have




                                                           236
   241   242   243   244   245   246   247   248   249   250   251