Vascular Plants of the Pacific Northwest, in five parts, offers the first complete guide, with keys, to the ferns, fern-related, and seed-bearing plants of Washington, northern Oregon, Idaho north of the Snake River plains, the mountainous western part of Montana, and southern British Columbia.
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‘Vascular Plants of the Pacific Northwest - Hitchcock, C. Leo, Cronquist, Arthur, Ownbey, Marion, Thompson, J. W.’.
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