Observation 88038: Verrucaria nigrescens Pers.
When: 2011-08-31
Herbarium specimen reported

Notes: Andrew’s specimen 8312011-15; my number 4457c.

K- C- KC-. On calcareous sandstone (HCl+). Areoles black inside (“black medulla”). Spores simple, ellipsoid, smooth, hyaline, ~15-16×6-7µm.

Proposed Names

58% (1)
Eye3 Eyes3
Based on microscopic features: see notes
Based on chemical features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2012-02-20 10:07:47 CET (+0100)
Last modified: 2012-12-12 22:20:09 CET (+0100)
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