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Nomenclature

Russula ochroleucoides Kauffman
Mycologia 9 (3): 165. 1917.

Original diagnosis

Russula ochroleucoides sp. nov.

Pileus 6–12 cm. broad, large, rigid, convex, soon expanded plane, varying straw-yellow to pale-ochraceous, usually dull-ocher to reddish-ocher toward center, pellicle adnate, soon dry and pulverulent to subrimose, even on the obtuse margin; flesh thick, compact, white, unchanging or slightly sordid in age; gills adnexed or free, rather narrow, rounded and broader in front, white or whitish, close to subdistant, shorter ones intermingled, often forked behind, intervenous; stem 4–6 cm. long, 1.5–2 cm. thick, short, rigid, equal or tapering slightly downward, white, glabrous or subpruinose, spongy-solid; spores even or minutely rough, 7–9 µ (incl. apiculus), white in mass; cystidia very few; basidia about 40 × 9 µ; taste tardily and slightly bitterish-acrid to disagreeably bitter; odor faintly aromatic or none.
Gregarious, on the ground in woods of deciduous trees. Infrequent. Elkmont, Tennessee, and Ann Arbor, Michigan. This seems to be a rather rare species and was found only three times. Although similar to R. ochroleuca in colors, it departs widely by belonging to the Rigidae, near R. virescens.

Typification

Information not available

Description

Photographs

Microscopy

SEM photos