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Nomenclature

Lactarius zonarius var. riparius Hesler & A.H. Sm.
N. Amer. Species Lactarius: 252. 1979.

Original diagnosis

Pileus 3-9(10) cm latus, depressus demum infundibuliformis, albus, deinde colore "cinnamon-buff" tinctus, viscidus, azonatus, demum subzonatus. Latex albus, constans, gustu acer. Lamellae albae deinde "cinnamon-buff" confertae, angustae. Stipes firmus, albidus demum colore "cinnamon-buff" tinctus, siccus. Sporae in cumulo "pinkish buff"; 7.5-9(10) x 6-7.5 µ. Specimen typicum in Herbarium Univ. Mich. conservatum est; legit Weber & Smith 86176, Highlands Rec. Area, Oakland County, Mich., 5 Sept. 1975.

Typification

Holotypus: Smith 86176 (MICH)
North America: United States: Michigan, Oakland County, Haven Hill, Highlands Recreation Area

Description

Photographs

Microscopy

SEM photos