Criteria for considering plants as rare, or endangered?

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Arvind Singh

Please check the following link.

http://www.iucnredlist.org/static/categories_criteria_3_1

Anil Kumar Thakur

Thank you, Dr. Arvind Singh Ji.

Marpha Telepova-Texier

Dear Anil Kumar Thakur,

In many case we need to have some evidence, indicating a risk (or high risk) of species extinction in the wild; and we can has only one the best criteria - the frequency of this one in the wild nature or the presence of this.

And after ten and more year we can made the analysis of existing 9 categories: EX, EW, CR, EN, VU, NT, LC, DD, NE.

Fred de Jager

Above answer, concise and informative @Marpha Texier -- "some evidence indicating risk" gauges level of rarity. Agree.