Pyrenula occidentalis (R.C. Harris) R.C. Harris
Annotated by A. Mikulin.

Oregon: Tillamook County: Siuslaw National Forest: Cascade Head National Scenic Research Area: Cascade Head Experimental Forest. Northern slope of the top of Cascade Head. Nature Conservancy Trail. Elev. 420 m.
45° 3' N, 124° W
Coordinate Source: Specimen Label. Misleading coordinates given only to nearest degree.
Alnus rubra/Sambucus/Picea sitchensis forest on the northern slope of the top of Cascade Head. Substrate: ALRU bark.

A. Mikulin s.n., Jul 6, 1996
With K. Gossen
OSC, Barcode: OSC-M-278614