Vijayasankar
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to J.M. Garg, efloraofindia, prasanna gogate, santhos...@gmail.com, le...@rediffmail.com, navend...@gmail.com, mpar...@gmail.com, kotta...@gmail.com, giby.ku...@gmail.com, rites...@gmail.com
The IUCN status assigned (by World Conservation Monitoring Center) to
Nothopegia castanaefolia (endemic to MH) is
Critically Endangered, based on the qualifying IUCN Criteria B1+2c.
The
Criteria B is applied here because this is a narrow endemic species, and qualifying to the threshold level of "Extent of occurrence estimated to be less than 100 km
2 or area of occupancy estimated to be less than 10 km
2". As per the rule it has to qualify at least two of the three sub-categories under
B, and this species qualifies to the sub-categories B1 and B2c.
The subcategory
B1 denotes that the species is "Severely fragmented or known to exist at only a single location"
and
B2c refers to the situation... "Continuing decline, observed, inferred or projected...in the area, extent and/or quality of habitat".
Ref.:
http://www.iucnredlist.org/apps/redlist/details/38746/0
Vijayasankar Raman
National Center for Natural Products Research
University of Mississippi