Piper, C.V. 1906. Flora of the state of Washington. Contributions from the United States National Herbarium. 11: 3-637 p.

Piper, C.V. 1906. Flora of the state of Washington. Contributions from the United States National Herbarium. 11: 3-637 p.

Piper, C.V. 1906. Flora of the state of Washington. Contributions from the United States National Herbarium. 11: 3-637 p.

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