Abstract

Usnea is a widespread fruticose lichen popularly known for its medicinal properties across the world. Though it has been mentioned in many floristic studies reported from Uttarakhand, India, no detailed taxonomic account has been conducted for the past two decades. The present study was based on specimens deposited in lichen herbarium of National Botanical Research Institute (LWG), personal herbarium of D.D. Awasthi (AWAS) and herbarium of the department of botany, Lucknow University (LWU). A total of 28 species, including seven new additions to Uttarakhand, namely U. dendritica Stirt., U. lucea Mot., U. norketti G. Awasthi, U. pseudosinensis Asahina, U. sinensis Mot., U. spinosula Stirt., U. subflorida Stirt.are presented along with key to species.

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