|Major Groups > Gilled Mushrooms > Pale-Spored > Russula > Russula cystidiosa|
by Michael Kuo
Russula cystidiosa is an oak-loving red russula from eastern North America, featuring a bright red cap, a white stem, mild taste, and a creamy to yellowish spore print. Since several other species share these features, microscopic analysis is probably necessary for certain identification: Russula cystidiosa features abundant, clavate pileocystidia and spores with well developed warts.
Ecology: Mycorrhizal with oaks and perhaps with other hardwoods; growing alone, scattered, or gregariously; summer and fall; widely distributed in eastern North America from Florida to Illinois and New Jersey.
Cap: 3.5-11 cm; convex when young, becoming broadly convex to flat, sometimes with a shallow depression; dry, or sticky when wet; very finely velvety; bright red to deep pinkish red; the margin usually slightly lined at maturity; the skin peeling fairly easily, often halfway to the center or more.
Gills: Attached to the stem or running slightly down it; close or nearly distant; white when young but creamy or pale yellowish with maturity.
Stem: 2-7 cm long; 1-2 cm thick; white, or sometimes flushed with pink; dry; fairly smooth.
Flesh: White; unchanging when sliced.
Odor and Taste: Odor not distinctive; taste mild.
Spore Print: Creamy.
Chemical Reactions: KOH on cap surface orange; iron salts on stem surface negative to pinkish.
Microscopic Features: Spores 7-12 x 6-10 µ; with high warts extending
Cite this page as:
Kuo, M. (2009, March). Russula cystidiosa. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/russula_cystidiosa.html