Observation 95578: Physconia Poelt

When: 2012-05-25

Collection location: Umptanum Falls, Kittitas Co., Washington, USA [Click for map]

46.8951° -120.6315° 745m

Who: nastassja (Nastassja Noell)

Specimen available

Substrate: Dirt on top of rock, unprotected from sun and wind.

Habitat: Rocky, open area in ecotone between sagebrush steppe and riparian aspen community. (Same area as Dermatocarpon specimen)

Description: Difficult to find mature specimens. Abundant on rocks in plot. Short rhizines or cilia, black, on underside. Photo shows soralia/soredia on terminal margins, not sure until looking under dissecting scope.

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Black below
By: nastassja (Nastassja Noell)
2012-05-27 18:33:55 CDT (-0400)

Must be a Physconia; can’t get a good read on the soralia yet with only my loupe :) so for now Physconia sp.

Black below?
By: Jason Hollinger (jason)
2012-05-26 19:25:05 CDT (-0400)

It does look like Physcia (P. dimidiata maybe?), but it shouldn’t be black underneath. It does happen, though. Andrew K. showed me a specimen of P. aipolia that was black below with squarrose rhizines(!) If not Physcia it would have to be Physconia, I think, because none of the Phaeophyscia really match (they all have either coarse isidioid soredia or laminal soralia). So, maybe a Physconia with the pruina washed off? P. perisidiosa? Beats me!

Created: 2012-05-26 18:55:20 CDT (-0400)
Last modified: 2012-05-27 18:34:55 CDT (-0400)
Viewed: 94 times, last viewed: 2017-06-13 02:03:29 CDT (-0400)
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