Observation 21664: Dermatocarpon atrogranulosum Breuss
When: 2009-05-28
Herbarium specimen reported

Notes: On shaded base of limestone cliff. Curtis tells me this is one of only a handful of populations known of this rare species. The texture of the undersurface is apparently important: texture is “sandpapery… consisting of coarse, irregular, partly clustering granules in part more than 0.5 mm across”. (The similar D. reticulatum is more finely and uniformly roughened.)

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Used references: Curtis Bjork

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Created: 2009-06-04 17:32:24 JST (+0900)
Last modified: 2009-06-04 17:32:24 JST (+0900)
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