Peltigera pacifica Vitik.
Annotated by Andrea Ruchty, 18 2008.

Washington: Skamania County: Gifford Pinchot National Forest, Mount Saint Helens National Volcanic Mounument, Canyon Unit #13, Forest Road 53, upper Jakes Creek. In upper Jakes Creek drainage on upper/middle slope of the west wall of the drainage. Best access is off Road 53 where in northeast corner of T4N R5E sec 4, follow finger ridge line to northeast drop the the bottom of second talus slope encounter, site is at base of the talus. Elev. 2800 ft.
UTM Zone 10, 563264E, 5079623N; T5N R5E S33 SE 1/4 of SE 1/4
Datum: NAD 27. Uncertainty: 805 meters. Coordinate Source: TRS2LL.
Habitat: At base of talus slope beneath thick growth of Acer circinatum near the edge of Tsuga heterophylla / Pseutsuga menziesii /Abies procera forest. Concave slope with moist site condition. Aspect: east. Light: partially shaded. Topography: Concave slope. Location Notes: On rotten wood and rocks beneath Acer circinatum at base of large talus slope. Surrounded by coniferous forest of TSHE, PSME and ABPR. Moist site in concave slope where ground water drains from talus slope above. Logs in this environment are still moist. Ten or more thalli were observed, scatted in area of ACCI. PEPA is widespread in this drainage, although seemingly never abundant. Associated Species: Peltigera collina and Peltigera neopolydacyla. Substrate: Found growing on rotten wood and rock. Substrate: saxicolous, lignicolous.

John Scott MTALICH116, Sep 6, 2006
WTU, Barcode: WTU-L-018679