Observation 216205: Lichen P. Micheli

When: 2015-08-22

Collection location: Pier Natural Bridge County Park, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Images

Proposed Names

57% (1)
Recognized by sight
31% (2)
Based on chemical features: K+ weak yellowish-orangish (no crystals), C- KC- UV-, P+ slow but strong and deep yellow => psoromic acid?

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= Observer’s choice
= Current consensus

Comments

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I posted this lichen before
By: Andrew Khitsun (Andrew)
2015-09-15 19:09:03 PDT (-0700)

While the soredial texture appears to put it into genus Lepraria, there is an odd thing about it: there are structures formed on the outlying areas of thallus that look like it could be some sort of Pertusaria to the naked eye – lumps and bumps that look solid. However, under closer examination, they’re as soft as the center of soredial mass, except they don’t have an appearance of soredia.