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1 June 2015 The Study of Russula in the Western United States
Bart Buyck, Soňa Jančovičová, Slavomír Adamčík
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Abstract

A short history to the study of Russula in the Western United States is provided and for the first time an exhaustive list of all 49 taxa described from this part of the country has been compiled. As a start to a revision of these species, a first series of four holotypes (one from California and three from the Pacific Northwest) have here been studied microscopically, resulting in some very substantial changes concerning species concept and consequent systematic placement. Russula flava var. pacifica appears unrelated to the type variety. It is therefore excluded as member of Integroidinae, subgen. Polychromidia, and deserves probably to be upgraded to species level within subgen. Russula. The Californian R. paxilloides is lectotypified and is a good member of subgen. Russula, but is closer to sect. Persicinae than to the white-spored Vinaceae as previously suggested. Russula maxima, widely accepted as a species of subsect. Subcompactinae (subgen. Heterophyllidia), certainly does not belong there and has to be moved to subgen. Polychromidia. Finally, R. inconstans is here maintained as member of subg. Polychromidia.

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Bart Buyck, Soňa Jančovičová, and Slavomír Adamčík "The Study of Russula in the Western United States," Cryptogamie, Mycologie 36(2), 193-211, (1 June 2015). https://doi.org/10.7872/crym/v36.iss2.2015.193
Published: 1 June 2015
JOURNAL ARTICLE
19 PAGES

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