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1 March 2000 Usnea pacificana, sp. nov. and U. wasmuthii (Lichenized Ascomycetes) in Pacific North America
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Abstract

Usnea pacificana P. Halonen, sp. nov., is reported from the Pacific coast of Canada and the United States. Usnea wasmuthii Räsänen is documented from the states of Washington and Oregon as new to North America. A key to the Usnea species that are similar or related to U. pacificana is provided.

Pekka Halonen "Usnea pacificana, sp. nov. and U. wasmuthii (Lichenized Ascomycetes) in Pacific North America," The Bryologist 103(1), 38-43, (1 March 2000). https://doi.org/10.1639/0007-2745(2000)103[0038:UPSNAU]2.0.CO;2
Received: 4 June 1999; Accepted: 1 September 1999; Published: 1 March 2000
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