Thallus medium-sized; pale gray to white branch-like stalks with tiny, frilly lobules and pink or brown wart-like structures that contain cyanobacteria. Stalks of some species may be tipped with black or brown apothecia. On soil and rocks in open habitats. Important pioneer species in disturbed areas. Over twenty- eight species of Stereocaulon occur in this region.

Alaska species lichens Foam Lichen


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