Watt’s Shield Fern (Polystichum wattii)  

Watt’s Shield Fern had a restricted distribution in the east part of the Indian state of Manipur, where it was found growing at ca. 1800 m altitude.  

The species is now thought to be extinct.  

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References:  

[1] Subhash Chandra; C. R. Fraser-Jenkins; Alka Kumari; Archana Srivastava: A Summary of the Status of Threatened Pteridophytes of India. Taiwania 52(2): 170-209. 2008 
[2] C. R. Fraser-Jenkins: Endemics and Pseudo-Endemics in Relation to the Distribution Pattern of Indian Pteridophytes. Taiwania 53(3): 264-292. 2008  

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edited: 20.10.2016