Observation 77434: Umbilicaria
When: 2011-09-24
Who: zaca
No herbarium specimen

Proposed Names

19% (2)
Recognized by sight
28% (1)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Doesn’t look like U. polyphylla
By: Jason Hollinger (jason)
2011-09-30 09:45:42 PDT (-0700)

U. polyphylla is darker and shiny and smooth on the upper surface, and it has complicated multi-lobed, crowded thalli. Your specimen is keying out as U. leiocarpa in the British Columbia flora, but that doesn’t seem right, either, given the sandpapery, bumpy lower surface. The white pruina in the center on top is reminiscent of several other species, including U. lyngei or U. decussata, but they both have conspicuous ridges and are gray-black not brown. U. phaea has the same lower surface, but it also has a smooth shiny upper surface. This must be a European species I’ve never seen.

Created: 2011-09-27 11:37:45 PDT (-0700)
Last modified: 2011-09-30 09:46:15 PDT (-0700)
Viewed: 24 times, last viewed: 2016-10-26 00:12:21 PDT (-0700)
Show Log