Common names: Destroying Angel, Deadly Amanita, White Death Cap, Angel of Death and Eastern North American Destroying Angel.
Scientific name: Amanita bisporigera G.F. Atk.
Pileus: (3)5—10(12) cm in diameter, sub-oval when young, then convex to broadly convex, becoming plano-convex to plane or very slightly uplifted with a broad central umbo in age, glabrous, dry, sub-viscid when moist, completely stark white or occasionally slightly straw yellow to pale tannish to rosaceous over the center, margin non-striate, sometimes decorated with shredded rag-like veil remnants, involute when young.
Lamellae: Free to nearly free, close to crowded, numerous intermediate gills, white.
Stipe: 6—14(20) cm long, 0.5—2(4) cm thick, equal or tapering slightly toward the apex, solid to stuffed with a pith or hollow in age, smooth to floccose-scaly, white, not staining but sometimes discolored rosaceous or with a ting of pale brown that is concolorous with the pileus, the annulus is persistent but thin, delicate, drooping, skirt-like or sometimes slightly shredded and rag-like in appearance, sometimes missing, the base is sub-globose to globose, without a rim or cleft, the volva is a white membranous sac which is often at least partially buried along with the base.
Flesh: Thin, white throughout, not discoloring when injured.
Odor: Pleasant but pungent at first , becoming foul/sickeningly-sweet in age.
Spore Print: White or whitish.
Edibility: Deadly poisonous.
Frequency and Distribution: Common in northeastern North America, its range stretches from Newfoundland to Texas.
Microscopic Features: Spores 7—10 × 6.5—9 µm smooth, broadly elliptical to sub-globose, amyloid, basidia mostly 2-spored.
Habitat: Solitary to scattered or gregarious, sometimes cespitose, mixed coniferous and deciduous forests.
Look-a-likes: Amanita citrina f. lavendula and pallid forms of Amanita brunnescens.
Key Features: One of the most exquisitely beautiful of all mushrooms and also one of the most deadly. The entire fruit-body is stark white, the bulb and basal sac are usually buried underneath the substrate.