Peltigera is a genus of approximately 100 species of foliose lichens in the family Peltigeraceae. Commonly known as the dog or pelt lichens, species of Peltigera are often terricolous, but can also oc
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Peltigera hydrothyria var. gowardii
Peltigera hydrothyria, commonly known as the waterfan, is a relatively rare aquatic lichen in the family Peltigeraceae, native to North America. It grows in cold, clean mountain streams, where it atta
Peltigera
…species clustered under a single name. Recent taxonomic work has led to the consolidation of three previously recognized aquatic Peltigera species (P. hydrothyria, P. gowardii, and P. aquatica) into a single species with three varieties. According to Bruce McCune and Daphne Stone (2022), while molecular analysis…
Hydrothyria venosa Flickr pellaea
Type specimen (Reliqu. Tuckerman. no 51 sample in AK) of Hydrothyria venosa collected by John Lewis Russell in 1851 from Wantastiquet Mountain, Vermont.
Growing on a submerged rock in a shaded stream in the Great Smoky Mountains, Tennessee. The gelatinous, black thallus is characteristic of its aquatic habitat.