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I was told by a lichenologist that this is "more likely an
Crustose lichen; verrucose surface; thin margin;: prothallus. Apothecia ...
Thick, warted, creamy-white or greyish thallus. White prothallus with zoned ...
Near the North Vancouver Outdoor Education School
Crustose lichen with a white thallus with large apothecia (up to 4 mm in ...
Lovely little button-like lichens. They cover large areas of the rocks and from ...
White, ball-like lichens that looked a bit like rounded off dice. The ...
analysis I have not attempted to find anything definite except to say that ...