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Nomenclature

Lactifluus deceptivus (Peck) Kuntze
Revis. gen. pl. 2: 856. 1891.

Lactarius deceptivus Peck
Rep. (Annual) Trustees State Mus. Nat. Hist., New York 38: 125. 1885.

Taxonomic synonyms:

= Lactarius tomentosomarginatus Hesler & A.H. Sm., N. Amer. Species Lactarius: 195. 1979.

Original diagnosis

Pileus compact, at first convex and umbilicate, then expanded and centrally depressed or subinfundibuliform, obsoletely tomentose or glabrous except on the margin, white or whitish, often varied with yellowish or sordid stains, the margin first involute and clothed with a dense soft or cottony tomentum, then spreading or elevated and more or less fibrillose; lamellae rather broad, distant or subdistant, adnate or decurrent, some of them forked, whitish, becoming cream colored; stem equal or narrowed downward, solid, pruinose-pubescent, white; spores white, .00035 to 0005 in.; milk white, taste acrid.
Pileus 3 to 5 in. broad, stem 1 to 3 in. long, 8 to 18 lines thick.
Woods and open places, especially under hemlock trees. Common. July to September.

Typification

Lectotypus: Peck
North America: United States: New York, Sandlake

Published type studies: Hesler & Smith (1979), N. Amer. Spec. Lactarius: 195; Montoya & Bandala (2005)

Description

Photographs

Microscopy

SEM photos