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Nomenclature

Russula dissimulans Shaffer
Brittonia [BPH] 14 (3): 267. 1962.

Original diagnosis

7. Russula dissimulans Shaffer, sp. nov. Pl. 10; figs. 7, 15.

Pileus maturitate siccus, glaber vel tenuiter coactus, albus, deinde brunnescens vel nigrescens; trama crassa, rigida, alba, secta rubescens primo, deinde nigrescens, sapore acri vel mite; lamellae angustae vel latiusculae, adnexo-adnatae vel decurrentes, confertae vel subdistantes, pallido-luteae, fuscantes; lamellulae numerosae; stipes glaber, albus, deinde nigrescens, obtritus primo rubescens, deinde nigrescens; sporae in cumulo albase, 7.7–10.8 × 6.5–9 µ, ornamentatione 0.1–0.5 (–0.7) µ alta, raro verrucarum separatarum, plerumque verrucoso-reticulata; cuticula pilei 27–150 µ crassa, ex hyphis 1–8 (–20) µ latis ad libram jacentibus, hyphis oleiferis nullis, constans.

Typification

Holotypus: Shaffer 1650 (MICH)
North America: United States: Oregon: Emmet Co.: W branch of Maple R.

Description

Photographs

Microscopy

SEM photos

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