Verrucaria nigrescens Pers.
Selection criteria. Country: South Africa. Associated organism: any (distribution map)
Number of records. 3.
Locations. Western Cape, state not noted.
Substrata. rock.
Literature. Doidge (1950) page(s) 225; Drège (1843) page(s) 85; Zahlbruckner (1922) page(s) 71.