Umbilicaria americana Poelt & T. Nash
Annotated by J. Riley, 8 Nov 2003.

Washington: Okanogan County: Okanogan-Wenatchee National Forest: Tonasket Ranger District: Mt. Hull, approx. 4 mi south of Oroville; west side of FS Rd 100, 5 mi from intersection with FS Rd 2526. Elev. 3111 ft.
48.8764° N, 119.3838° W; T40N R27E S13 SW
Coordinate Source: USFS plot database.
Sparsely forested site. Old growth (350 yrs) PIPO and PSME on steep vertical cliffs of Hull Mt, overlooking and 1.5 miles from the agriculturally intense Okanogan Valley. Area immediately below plot was recently burned and some trees on plot have fire scars. Pendant Bryoria found only on most protected trees, Cancon found on highly exposed JUOC. Lichens in good condition. Slope 100%. Aspect 254°. Abundance code: 4-2. Substrate: Verticle rock cliff.

L. Geiser s.n., Aug 10, 2003
OSC, Barcode: OSC-M-295739