North American species of Lactarius / L. R. Hesler, Alexander H. Smith.

406

North American Species of Lactarius

a collection by Seth Lundell (Upland: Upsala, Stadsskagen), and a
collection from France determined by Josserand, all have pleurocystidia
rather similar in number, shape, and size to the American collections.
L. lepidotus is distinct in its pileus becoming rimulose-squamulose, in its macrocystidia as described, and in the terminal cells of the
cuticular hyphae often aggregated to form squamules. It lacks the distinctive odor of the typical variant of L. glyciosmus.
Material cited.-ALASKA: Wells-Kempton 2940, 5154, 5243,
5866, 5896, 5906, 5985 (all MICH); COLORADO: Smith 85014;
IDAHO: Petersen (TENN 23403, 23718); Smith 46341, 53667, 54168,
60036, 71110, 76135, 76914, 78702, 81945, 82444, 82445, 82446, 82456,
82625; MAINE: Bigelow 10920 (MASS); MASSACHUSETTS: Burlingham, Lact. N. Am. Fasc. II, no. 34 (MICH); MICHIGAN: Bailey
126 (MICH); Harrison 9544 (MICH); Hoseney 2768, 2893 (all
MICH); Smith 33276, 38681, 64495, 85441; MINNESOTA: Weaver
1260 (MICH); WISCONSIN: Weber 4280 (MICH).
Canada. NOVA SCOTIA: Harrison 11874, 11954, 12072 (all
MICH); ONTARIO: Malloch 11-9-73/17 (TRTC); Smith 4201,
4667; QUEBEC: Groves (TENN 18111); Malloch 24.8.76/26, 5.9.76/
14 (all TRTC); Smith 61619.
Europe. ENGLAND: Smith 80510; THE NETHERLANDS:
Bas 619, 660, 1780, 7509, 9129 (all L); SWEDEN: Lundell, September
30, 1945 (MICH); SWITZERLAND: Smith 80431.
145. Lactarius griseus Peck
Ann. Rep. N.Y. State Cab. 23: 120. 1872
Lactarius glahripes A. H. Smith, Pap. Michigan Acad. Sci. 17: 175. 1933.
Illus. Pls. 80, 81b; figs. 169, 231.
Pileus 1.5-5 cm broad, convex, expanding and becoming depressed or deeply depressed from early stages on, often infundibuliform
in age and with a central papilla, "drab" (gray) when young, with the
depression "benzo-brown" (violaceous-brown), becoming much paler
with age and developing an ochraceous undertone but finally distinctly ochraceous, dry, central portion squamulose to fasciculatescaly, margin inrolled at first, even to slightly striate at times. Context
white to yellowish finally, thin; odor slight; taste of young fresh basidiocarps slowly slightly acrid, often mild by maturity or after standing several hours or more. Latex white, drying yellowish in droplets,
staining white paper yellow, gills not staining.
Lamellae adnate to decurrent, white, becoming yellowish