Collection location: Stebbins Cold Canyon Reserve, Solano Co., California, USA [Click for map]
This observation is for the small (Few cm across) white crust on the same rock as observation 87564 nestled in between a few different lichen species. And guesses on the grayish lumpy lichen in the bottom right corner are appreciated too!
I might come back to this to work on it better when I have a good way of getting crusts off rocks.
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sum(score * weight) /
(total weight + 1)
K test is also important, as well as spores and often conidia. Both can be hard to find. For some reason many Aspicilia don’t like to produce mature ascospores very often. Conidia are found in hidden tiny black dot-like pycnidia, sometimes completely invisible: slice an areole open and start cutting sections off of it until you see a small pinkish to blackish round thing buried just under the surface, often causing it to pucker or mound up a bit.
has the feel of an Aspicilia to me
(type of rock, in particular silicate or calcareous is helpful for identifications)