When: 2014-05-17

Collection location: Rooster Rock State Park, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available


Proposed Names

84% (1)
Recognized by sight: broad flat contiguous lobes

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= Observer’s choice
= Current consensus


Add Comment
Yes, but it’s more about the broadness of the lobes
By: Jason Hollinger (jason)
2014-05-18 20:58:11 PDT (-0700)

Not in absolute terms, but in relative terms. In Candelaria the lobes are scarcely any wider than they are thick, and distinct from each other. In X. parietina the lobes are almost confluent and much broader than thick, giving it a kind of look like they’re “flowing” over the substrate. This must have been a struggling or depauperate specimen, and that’s why it fooled you.

I’m guessing
By: Daniel B. Wheeler (Tuberale)
2014-05-18 20:41:21 PDT (-0700)

you noticed the moss in the upper right-hand corner of the photos, Jason?

Candelaria is much smaller
By: Jason Hollinger (jason)
2014-05-17 22:34:21 PDT (-0700)

The fertile Candelaria (C. fibrosa) I don’t think occurs on the west coast, but it is also a much much smaller species. Also K test will distinguish the two genera handily: Xanthoria K+ instantly deep wine-purple, Candelaria is K-.