Peltigerarufescens Thallus grey to brownish, heavy tomentum on upper surface of lobes. Rhizines abundant, forming a mat. Apothecia red-brown, common. Washington; Alaska to northern California, Idaho, Montana, North Dakota to Maine, south to Missouri and Maryland; Canada.
Peltigeravenosa Thallus deep green to dark grey-green, lobes fan-shaped or rounded to 15 mm. Lower surface white marked by raised black veins, rhizines absent. Washington; Alaska to northern California, Idaho, Montana, Wyoming, Utah, Colorado, New Mexico, Michigan, New York, Maine, New Hampshire; northern Canada, to US border in British Columbia, Alberta, Ontario, Quebec.
Additional Resources:
PNW Herbaria: Specimen records of Peltigera in the Consortium of Pacific Northwest Herbaria database