| Major Groups > Gilled Mushrooms > Pale-Spored > Lactarius > Lactarius vinaceorufescens |
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Lactarius vinaceorufescens [ Basidiomycetes > Russulales > Russulaceae > Lactarius . . . ] by Michael Kuo This common conifer lover has white milk that turns yellow after exposure to air, usually within a few seconds. The cap is cinnamon pink or darker red, and usually displays concentric zones of color, at least when young. The stem is smooth, without potholes, and the gills become spotted with pinkish to cinnamon discolorations. Lactarius chrysorrheus is very similar, but has paler colors, gills that do not discolor, and a more southerly range. In the conifer bogs of northern Michigan, Lactarius vinaceorufescens is a prolific late summer and fall milky cap, often appearing in large numbers along with Lactarius deliciosus and Lactarius thyinos. On the West Coast, Lactarius xanthogalactus is a similar species, found under oak. None of the milky caps with milk that turns yellow should be eaten. Description: Ecology: Mycorrhizal with conifers; growing alone or gregariously; summer and fall; widely distributed in northeastern North America. Cap: 4-12 cm; broadly convex with an inrolled margin when young; becoming shallowly depressed or vase-shaped, with an uplifted margin; slimy or sticky when fresh; smooth; cinnamon pink, cinnamon, or reddish brown; typically with zones of color, at least when young. Gills: Beginning to run down the stem; close; pale at first, developing pinkish to brownish stains, and sometimes reddish brown overall with age. Stem: 4-7 cm long; 1-2.5 cm thick; equal, or enlarging towards the base; smooth; with reddish brown hairs at the base; whitish, becoming colored like the cap with age. Flesh: White; firm; becoming yellow when sliced, due to the milk. Milk: White, becoming yellow, within a few seconds, on exposure to air. Odor and Taste: Odor not distinctive; taste acrid or peppery (sometimes slowly so). Spore Print: Whitish to yellowish. Microscopic Features: Spores 6.5-8 x 6-7 µ; broadly elliptical or nearly round; ornamentation with prominences 0.5-1 µ high; connecting lines amyloid, not forming a complete reticulum. REFERENCES: Smith, 1960. (Hesler & Smith, 1979; Smith, Smith & Weber, 1979; Phillips, 1991/2005; Lincoff, 1992; Roody, 2003; McNeil, 2006.) Herb. Kuo 09110417. Further Online Information: Lactarius vinaceorufescens in Hesler & Smith (1979) |
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Cite this page as: Kuo, M. (2004, September). Lactarius vinaceorufescens. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/lactarius_vinaceorufescens.html |