Out of the 353 new flora and fauna species discovered in Eastern Himalayas between 1998-2008, 19 were found in Sikkim, stated a latest WWF report.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/19-flora-fauna-species-discovered-sikkim
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/eastern-himalaya
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/flora
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fauna
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/reptiles
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/amphibians
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wwf
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sikkim