Observation 196427: Umbilicaria phaea Tuck.

When: 2015-01-15

Collection location: Catherine Creek, Columbia River Gorge National Scenic Area, Klickitat Co., Washington, USA [Click for map]

45.7108° -121.3619° 87m

Who: Steve Sullivan (WildflowerSearch)

No specimen available

On basalt, damp, texture of silicon rubber


back side showing in upper left

Proposed Names

49% (2)
Eye3 Eyes3
Recognized by sight: Common near this location
28% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Entirely plausible but need to see underside
By: Jason Hollinger (jason)
2015-01-16 02:21:05 CST (-0500)

There’s pretty much no way to distinguish U. phaea and U. angulata from above, and it could even potentially be U. torrefacta (although I’d be surprised since it looks really black below. The thing to look for is the texture: U. phaea has a coarse sandpaper texture; U. angulata has rhizines; U. torrefacta is paler with tattered “plates” (easier to see than describe!)

Created: 2015-01-15 23:33:25 CST (-0500)
Last modified: 2015-01-16 13:10:31 CST (-0500)
Viewed: 38 times, last viewed: 2017-06-19 19:23:17 CDT (-0400)
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