Observation 88063: Parmotrema A. Massal.

When: 2012-02-20

Collection location: Hughes Mountain Natural Area, Missouri, USA [Click for map]

Who: Patrick Harvey (pg_harvey)

No specimen available

Proposed Names

1% (2)
Recognized by sight
28% (1)
Recognized by sight: broad-, round-lobed pale gray foliose lichen with cilia

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Tough one
By: Jason Hollinger (jason)
2012-02-20 19:27:05 CST (-0500)

I wonder if this is P. margaritatum. Most sorediate Parmotrema have strictly marginal soralia. P. reticulatum can have scattered coarse laminal soralia like this, but this doesn’t look right. The chemistry is the same for both (salazinic acid, K+y to blood red), so that wouldn’t help. We just need a better look at the coloration of the surface. P. reticulatum usually has a very fine but abundant network of hair-fine cracks in the upper surface, or in those rare cases where it doesn’t, it at least has a mottling of fine white lines.

Created: 2012-02-20 19:14:11 CST (-0500)
Last modified: 2012-02-20 19:19:38 CST (-0500)
Viewed: 23 times, last viewed: 2017-06-10 10:30:12 CDT (-0400)
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