Lepraria membranacea (Dicks) Vain.

Bajpai, Rajesh, Upreti, D. K. & Nayaka, Sanjeeva, 2018, The lichen genera Lepraria (Stereocaulaceae) and Leprocaulon (Leprocaulaceae) in India, Phytotaxa 356 (2), pp. 101-116 : 110

17. Lepraria membranacea (Dicks) Vain.

According to Awasthi (2000), thallus leprose to subfoliose, with a membranous appearance, whitish or greyish yellow to pale yellowish green, tightly attached to the substrate at centre, loosely so at margins; thallus forming more or less rounded patches, often becoming fused with other thalli, up to 5 cm in diam.; margin delimited; lobes well developed, wide; margin raised; medulla distinct, white; hypothallus well developed, brown to greyish black, visible along margin of thallus, forming a thick tomentum; prothallus absent; soredia abundant, not well separated, fine to medium, up to 80–100 μm in diam.; projecting hyphae rarely present, short; consoredia present, up to 150–200 μm; isidia-like structures absent.

Chemistry: Pannaric acid (major), roccellic/angardianic and atranorin (in traces); in some specimens norstictic and zeorin also reported. K + yellow, C–, Pd+ reddish orange.

Ecology and Distribution: It is a worldwide distributed species, and found growing over rock, mosses, bark and rarely on soil.

According to Singh & Sinha (2010) earlier the species is known from Jammu & Kashmir and Uttarakhand in Indian Himalayan regions of India.