Observation 12763: Parmotrema arnoldii (Du Rietz) Hale
When: 2008-10-16
No herbarium specimen

Notes: Very broadly lobed whitish-pale green lichen with interesting black tendrils on the edges of the lobes, like hair. Growing on a Lodgepole pine branch, it has a pinched appearance: like paper that has been pinched between fingers on a hard surface. Reverse is white or black, with black predominating, and white mostly at edges of lobes.

Proposed Names

5% (2)
Eye3
Recognized by sight
56% (1)
Eyes3
Recognized by sight: Definitely Parmotrema due to white and black splotched underside and black cilia. P. perlatum has fewer or less conspicuous cilia. The other common species is P. arnoldii. P. crinitum also occurs there, but until it’s older and displays soralia or isidia, I don’t know how to tell them apart.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-10-17 12:58:30 CDT (-0400)
Last modified: 2008-10-17 12:58:30 CDT (-0400)
Viewed: 28 times, last viewed: 2016-03-20 21:07:43 CDT (-0400)