Observation 148909: Peltigera collina (Ach.) Schrad.
When: 2013-10-16
No herbarium specimen


Thallus is bluish-gray on top, white underneath.
Close-up of drier thallus. More green here.
Small white rhizimes can be seen on the underside here.

Proposed Names

-27% (2)
Recognized by sight
4% (2)
Used references: Brodo, Lichens of North America
56% (1)
Recognized by sight: this is a common species (and one of the few Peltigera) which grows truly epiphytic on branches and high on dry trunks; it should be completely smooth, pruinose at the tips (usually very faint) and have soredia along some margins; distinguished from Nephroma by having rhizines and veins; if this were on the ground I would be less confident because we can’t really see the important details (texture of surface, veins, soredia) in these photos

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2013-10-16 20:57:27 EDT (-0400)
Last modified: 2014-02-06 16:13:50 EST (-0500)
Viewed: 16 times, last viewed: 2017-06-16 18:11:50 EDT (-0400)
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