Observation 11667: Lichen P. Micheli

When: 2008-09-29

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

Who: Daniel B. Wheeler (Tuberale)

No specimen available

More of this ubiquitous smallish lichen, growing on Quercus palustra. Resupinate to slightly elevated at the edges. Mostly less than 2 inches across, this specimen is approximately 1/2 inch across.


Proposed Names

86% (1)
Recognized by sight
84% (1)
Recognized by sight: Distinctive plane to somewhat concave strap-shaped lobes with reticulate markings. Very common.

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

= Observer’s choice
= Current consensus


Add Comment
Definitely Parmelia
By: Jason Hollinger (jason)
2008-09-30 21:20:11 CEST (+0200)

Image 23190 looks like a Punctelia — the markings are dots not net-like, also the shape of the lobes is different.

As for species of the Parmelia in the other two, P. sulcata is the most common by far, but to be sure, you’d have to check the soredia or isidia on older thalli.