Morphology and specimen distribution of Clade 8 Russula pseudotsugarum (Woo sp. 52). BW followed by numerals designate Ben Woo samples. a Photo by B. Woo, BW953, scanned image from WTU. b Distribution of specimens of the Woo collections in Pacific Northwest States and Provinces. c–h Micromorphology, all 1000x magnification. c Spores in median optical section and surface view in Melzer’s reagent (c1–c2, BW767; c3–c4, BW767; c5–c6, BW786; c7–c8, BW786; c9–c10, BW953; c11–c12, BW953). d–e Basidia (BW951, BW1041). f–h Cap cuticle terminal cells with refringent contents (BW849, BW1035, BW1035). Scale bars 10 µm