Morphology and specimen distribution of Clade 5 Russula pseudopelargonia (Woo sp. 36). BW followed by numerals designate Ben Woo samples. a Photo by B. Woo, BW784, scanned image from WTU. b Distribution of specimens of the Woo collections in Pacific Northwest. c–h Micromorphology, all 1000x magnification. c Spores in median optical section and surface view in Melzer’s reagent (c1–c2 BW562; c3–c4 BW562; c5–c6 BW603; c7–c8 BW888; c9–c10 BW888). d–e Basidia (BW562, BW562). f–h Cap cuticle terminal cells with refringent contents (BW779, BW747, BW643). Scale bars 10 µm