Parmotrema arnoldii (Du Rietz) Hale
Annotated by D. Glavich.

Oregon: Curry County: Rogue River-Siskiyou National Forests: Powers Ranger District: Grassy Knob Wilderness.
42.7498° N, 124.3676° W
Uncertainty: 800 meters. Coordinate Source: Calculated from TRS.
Plot is extremely steep w/ cliffs & rock slides scattered thruout area. PSME is dom tree w/ TSHE, ABCO, ACCI, QUERC, RHMA3, MANE2, PAMY also in the mix. Dom un herb layer are POMU, IRIS w/ occasional BLSP, VACCI, HODI, TODI! Forest is dark, lots of moss growing on boles. Many animal trails thruout plot. Soil is fine/sandy w/ pebbles & rocks. There was a fire ~30 yrs ago. Slope 100%. Aspect 320°. Veg. cover: HODI, TODI, XETE, ADAL, ACTR, graminoids. HODI, TODI, XETE, ADAL, ACTR, graminoids.; QUERC, RHMA3, MANE2, ACCI, PAMY, TSHE, ABCO, POMU; PSME Lichen diversity & abundance very low. Only coll 20 packets, & had to coll tissue off-plot (N/NW) ~ 2800 ft, b/c biomass was so low. Spot Tests: Medulla UV+blue/white.

L. Lasselle s.n., Jul 19, 2011
OSC, Barcode: OSC-M-291983