A small to medium white Amanita of eastern North America, covered in thick whitish to grayish powdery veil material and smelling strongly of chlorine. It belongs to the difficult section Lepidella, and the name is often applied loosely to similar white, chlorine-scented species. Strictly, it refers to an oak-associated species found mostly below the Great Lakes.
Not edible; edibility is poorly studied and the species is generally regarded as toxic. No member of section Lepidella should be eaten. White Amanitas of this kind can be confused with the deadly destroying angels (Amanita bisporigera and relatives, amatoxins), which have a smooth bald white cap without powder or warts, a membranous ring, and a sack-like volva rather than a powdery bulb.
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Habitat
Ectomycorrhizal with oaks and perhaps pines. Usually solitary, sometimes scattered or in small groups, in oak and pine-oak woods. Summer and fall.
Distribution
Eastern North America below the Great Lakes, from about the Mississippi River east; reported from Massachusetts and Illinois south to Florida, and frequent in the North Carolina Piedmont and Coastal Plain.
Characteristics
Cap: 2.5-10 cm, convex becoming flat; dry; white, covered with thick white to grayish powdery veil that may form a mealy layer, patches or a few warts; margin not lined. Gills: free or slightly attached, close, white to ivory, with frequent short gills. Stem: 5-10 cm long, 0.5-1.5 cm thick, nearly equal above a slight basal bulb that may extend into a short root; white and powdery like the cap; usually without a ring. Volva: powdery and indistinct. Flesh: white, not staining. Odor: strong, foul, of chlorine and rotting meat. Chemical reactions: KOH negative to slightly yellowish on cap. Spore print: white. Spores: 7-11 x 5-7 um, ellipsoid, smooth, amyloid.