Siphula is a genus of lichenized fungi in the Icmadophilaceae family. The widespread genus contains about 33 species. Siphula was circumscribed by Swedish mycologist Elias Fries in 1831. Species Siphula abbatiana Siphula abscondita Siphula applanata Siphula aquatica Siphula australiensis Siphula ceratites Siphula coriacea Siphula decumbens Siphula dissoluta Siphula fastigiata Siphula flavovirens Siphula gracilis Siphula parhamii Siphula pteruloides Siphula verrucigera Siphulastrum cladinoides Siphulastrum granulatum Siphulastrum mamillatum Siphulastrum triste Siphulastrum usneoides References Pertusariales Pertusariales genera Taxa named by Elias Magnus Fries Taxa described in 1831