articles de Amanita crenulata Peck 1900

Comprehensive Description ( anglais )

fourni par North American Flora

Venenarius crenulatus (Peck) Murrill, Mycologia 5: 77. 1913
Amanita crenulata Peck, Bull. Torrey Club 27: 15. 1900.
Pileus thin, broadly ovoid, becoming convex or nearly plane, 2.5-5 cm. broad; surface whitish or grayish, sometimes tinged with yellow, decorated with a few thin, whitish, floccose warts, or with whitish, floccose volval patches, somewhat striate on the margin; context white, agreeable to the taste; lamellae white, crowded, reaching the stipe and sometimes forming decurrent lines, edges floccose-crenulate ; spores globose, smooth, hyaline, usually uninucleate, 7.5-10 ju; stipe equal, bulbous, floccose-mealy above, white, stuffed or hollow, 2.5-5 cm. long, 6-8 mm. thick; annulus slight, evanescent; volva whitish, very thin and fragile, evanescent.
Type locality: Eastern Massachusetts. Habitat: Low ground under trees. Distribution : Massachusetts.

licence: cc-by-nc-sa-3.0

citation bibliographique: William Alphonso Murrill. 1914. (AGARICALES); AGARICACEAE (pars). North American flora. vol 10(1). New York Botanical Garden, New York, NY

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site partenaire: North American Flora

Amanita crenulata ( anglais )

fourni par wikipedia EN

Amanita crenulata, also known as the poison champagne amanita,^[1] is a species of fungus that is very common in the Northeast United States.

Description

Cap: 2 – 9 cm wide, hemispheric at first, then becoming flatter. Pale tan, sometimes grayish or yellowish. The volva is distributed over the wide cap as powdery, somewhat paler warts. The color of the warts lends the mushroom the name "champagne."
Gills: narrowly adnate, close to subcrowded, and white to cream. The short gills are truncate to subtruncate or (occasionally) subattenuate.^[2]
Stipe: The stipe is 17 - 100 × 3.5 - 16 mm and has a skirt-like annulus that is often quickly lost or left in torn fragments on the pileus margin. The notable bulb usually bears a distinct ring of champagne volval powder on its "shoulder."^[2]
Odour: Not distinct.

It is an ectomycorrhizal fungus, living in root symbiosis with a tree.