Browsing Extension Service -- Pacific Northwest Extension Publishing by Author "Parker, Robert, 1941-"

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Field horsetail and related species, Equisetaceae

Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Burrill, L. C.; Parker, Robert, 1941-; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University, Extension Service, 1994-07)

The Horsetail (Equisetaceae) family comprises 30 species, all in the ancient genus Equisetum. During the Carboniferous age (more than 230 million years ago), the Horsetail family was the dominant plant group in the world ...
Scotch broom : biology and management in the Pacific Northwest : Cytisus scoparius (L.) Link

Oregon State University. Extension Service; Washington State University. Extension; University of Idaho. Extension; Hulting, Andrew Gerald; Neff, Karin; Coombs, Eric M.; Parker, Robert, 1941-; Miller, Glenn A.; Burrill, L. C.; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University, Extension Service, 2008-07)

A bright sign of spring, Scotch broom (Cytisus scoparius) reminds us of its invasive presence each year as many acres of forests, pastures, and rights-of-way burst into golden bloom. Scotch broom is a native of Europe an ...