New species and records of the lichen genus Acanthothecis (Graphidaceae) from India

Abstract

AbstractRecent revisions of the graphidaceous lichens of India have brought to light several new taxa in the family Graphidaceae. In the present study seven species of Acanthothecis are recognized from India. Three new species, viz. Acanthothecis archeri, A. celata, and A. coccinea, are described and A. nivalis, a species described earlier from the Andaman Islands, has now been recorded from the mainland. A revised key to the seven Acanthothecis species so far known from India is also presented.