When: 2014-06-13

Collection location: MP 14.5 E. Larch Mountain Rd., Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Lichen growing on Noble fir burl stump, with raised circular bumps (apothecia?), sometimes with black centers. Underside of lichen distinctively white.


Proposed Names

56% (1)
Recognized by sight: assuming it is white/gray when dry; if it were yellowish-greenish dry then it would be P. ambigua; but it usually is more yellow when wet not less

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Add Comment
Not yellowish, I think.
By: Daniel B. Wheeler (Tuberale)
2014-06-14 14:00:20 CDT (-0500)

This is growing on a very iconic Noble fir stump/burl, without bark, growing immediately adjacent to the trail to Sheppard’s Point. It is about 40 feet below the viewpoint. The fact that I could photograph it means it is on the eastern side of the burl. The southern side is very steep and unsafe. The viewpoint at Sheppard’s Point is on a cliff-face, about 300 feet high. The sides of the point are only slightly less steep.

I was trying to get the contrast between the exposed pinkish Noble fir burl wood, and the lichen.

Created: 2014-06-13 16:34:56 CDT (-0500)
Last modified: 2014-06-14 14:01:27 CDT (-0500)
Viewed: 18 times, last viewed: 2019-07-14 01:20:17 CDT (-0500)
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