When: 2007-02-20

Collection location: Trinity Mountains, Shasta Co., California, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

UPPER SURFACE: lobes 12 or more mm broad, margins turned down and crisped/wavy, minutely tomentose except in center, gray, faintly wrinkled, no soredia/isidia/lobules
LOWER SURFACE: veins narrow and raised, rhizines slender, long and pointed near margin but more brush-like/squarrose in the center
APOTHECIA: red-brown, vertically folded

God I hate Peltigera. Is this P. neopolydactylon or P. polydactylon??


Proposed Names

87% (1)
Used references: Sonoran Flora, Lichens of N. America, Ways of Enlichenment (provisional keys). Corrected ID on 20090825 based on sight: bullate upper surface, “soft”-looking discrete pale rhizines visible below. (Other possibility would be P. cinnamomea, but this is the wrong habitat and overall color for that species.) I’ve learned to take the apparent lack of tomentum on the upper surface with a grain of salt. This specimen is clearly not shiny enough to be in the P. polydactylon group.

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= Observer’s choice
= Current consensus


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