Observation 16233: Lichen P. Micheli

Found on ground, probably recently blown out of nearby trees (Oregon White oak, madrone, Red alder, Black cottonwood, Douglas fir). Thallus rather thin-fleshed, white raised ridges and bumps, tips thin and pointed, thallus much broader at the base: up to 1.3 inches as shown with my thumb as comparison. underside slightly yellowish-green, with ridges, blackish circles and no apparent root-like structures.

[admin – Sat Aug 14 02:07:55 +0000 2010]: Changed location name from ‘Willamette Falls Wayside, Oregon City, Clackamas County, Oregon’ to ‘Willamette Falls Wayside, Oregon City, Oregon, USA’


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