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When: 2008-10-09

Collection location: Southeast Portland, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

From several ornamental pear trees at a local McDonald’s: this very common, very yellow, with hints of green in some of the newer growth lobes. Surface yellow to slightly yellow-green; reverse mostly light gray with some black where attached to bark, edged in yellow-green. Cup-like structures on surface are orange inside the cup, but edged in white. With the manager’s permission, took a collection of the lichen today as a voucher. Hope to get to Powell’s Book Store tomorrow to start my lichenology library.


Proposed Names

5% (2)
Recognized by sight
56% (1)
Recognized by sight: orange disks (almost certainly K+ deep red) and broad wrinkled foliose lobes (all other Xanthoria and Xanthomendoza have much narrower lobes)

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= Observer’s choice
= Current consensus


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