1. . . Vascular Plants of the Pacific Northwest. Part 3: Saxifragaceae to Ericaceae. University of Washington Press: Seatle, WA, 1961.
2. . . Alaska Trees and Shrubs. Agriculture Handbook 410. US Department of Agriculture, Forest Service: Washington, DC, 1972.
3. . Michigan Flora. Part II. Dicots (Saururaceae–Cornaceae). Bulletin 59, Cranbrook. Institute of Science: Bloomfield Hills, MI and University of Michigan Herbarium: Ann Arbor, MI, 1985.
4. Antimycobacterial Polyynes of Devil's Club (Oplopanax horridus), a North American Native Medicinal Plant
5. Bioactive constituents of Alaskan devil’s root (Oplopanax horridus, Araliaceae)