Straminella

About

Straminella is a genus of lichen-forming fungi in the family Lecanoraceae. Species in this genus typically form yellow-green to beige crusts on bark or wood and are characterised by pale to brownish fruiting bodies. The genus contains usnic acid as its main secondary metabolite, with most species also producing psoromic acid. It has a scattered distribution across North America, North Africa, Europe, East Asia, and Australia.

Summary from Wikipedia