References from the California Lichen Catalog

GOWARD, T. 1999.

The Lichens of British Columbia. Part 2. Fruticose species. Special Report ser. 9. British Columbia Ministry of Forests, Crown Publications Inc., Victoria, B. C., Canada.

PETERSON, E. B., & J. RIKKINEN. 1999.

Range extensions of selected pin-lichens and allied fungi in the Pacific Northwest. The Bryologist 102: 370–376.