Leptogium verrucosum

Leptogium verrucosum is a rare species of foliose lichen in the family Collemataceae. Found in India, it was formally described as a new species in 2010 by Archana Dube and Urmila Vasudev Makhija. The type specimen was collected from the walls of the Purandar fort (Maharashtra) at an elevation of 1350 m. It has also been recorded growing on bark in moist shady locations. Characteristics of Leptogium patwardhanii include the numerous pycnidia that give the thallus a warty appearance, and the wrinkled upper and lower surfaces. Its ascospores are muriform (divided into internal chambers by a 1 or 2 vertical septa and 2 to 4 transverse septa), have acute ends, and measure 15–32 by 6–12 μm.