Grisette

Amanita vaginata

''Amanita vaginata'', commonly known as the grisette, is an edible mushroom in the Amanitaceae family of fungi. Unlike many other ''Amanita'' mushrooms, ''A. vaginata'' lacks a ring on the stem. The cap is gray or brownish, 5 to 10 centimetres in diameter, and has furrows around the edge that duplicate the gill pattern underneath. It has a widespread distribution in North America, and is thought to be part of a species complex that includes other similar-looking Amanitas.
Amanita 'egg' so thrilled to see one of these! and such a pristine one too. There was a mature specimen quite close. Amanita vaginata,Fall,Geotagged,Grisette,United States

Appearance

The cap is 3 to 10 centimetres in diameter and gray to grayish-brown in color; initially the cap is oval, then as it matures it becomes progressively conical, convex, and eventually flattened, sometimes with a small umbo . The gills are white, free to narrowly attached, moderately crowded together, and sometimes have a grayish tint; the lamellulae are truncate. The flesh is white and thin, and does not change color upon bruising or injury. The stem is 8 to 22 centimetres long and 1 to 2 centimetres thick. Unlike many other Amanitas with stems that are swollen at the base , the thickness of the ''A. vaginata'' stem is roughly the same at both ends. The stem surface is covered with a finely powdered bloom , especially near the top; faint longitudinal lines may be seen. The base of the stem is enclosed in a loose, sack-like volva that may discolor grayish or reddish brown. The spore print is white.

The variant ''A. vaginata'' var. ''alba'' is pure white, and has a volva that is either absent, or not constricted around the base of the stem.
Grisette Mushroom - Amanita vaginata Conical, grayish-brown, tacky cap with a central bump and scattered gray patches. The margin was prominently lined. Gills were white, close, and had short gills. The stipe was white and had a white volva that was buried. Habitat: Growing on the ground between two rocks in a swampy, mixed forest. This species is part of the Amanita sect. Vaginatae complex. The exact species may yet be unknown. To explain, here is a blurb from Michael Kuo: "More likely, there are many North American species going under the classic European name "Amanita vaginata." Amanita expert Rod Tulloss treats literally dozens of unnamed, vaginata-like, numbered taxa ("species 46," and so on) in his keys to North American amanitas (2003, 2008)--all separated on putative morphological differences. In short, a comprehensive DNA and morphological study of well documented "Amanita vaginata" collections from across the continent will be required before there are "good names" for our North American species." Source: http://www.mushroomexpert.com/amanita_vaginata.html Amanita vaginata,Amanita vaginatae,Geotagged,Summer,United States,amanita,fungus,grisette,mushroom

Naming

The tawny grisette was once thought to be a variety of ''A. vaginata''. In North America, ''A. vaginata'' is considered to be part of a species complex, that includes ''A. constricta'', ''A. pachycolea'' and ''A. protecta''.
Amanita Vaginata On Kent Island This is a picture of Amanita Vaginata along the Cross Island Trail on Kent Island in Queen Anne's County, Maryland. Amanita vaginata,Geotagged,Grisette,Summer,United States

Distribution

A mycorrhizal species, ''Amanita vaginata'' grows singly or numerous in both coniferous and hardwood forests. It has also been noted to occur frequently in grassy areas at the edge of forests, unkempt lawns, and suburban area where the ground has been recently disturbed. A widely distributed and common species, it fruits from the spring to the fall.

This species is widely distributed in North America. It is also found in the Azores, Australia, and Scotland.
Amanita vaginata grp. my guide states that brown species may not yet have names.. Amanita vaginata,Geotagged,Grisette,Summer,United States

Habitat

A mycorrhizal species, ''Amanita vaginata'' grows singly or numerous in both coniferous and hardwood forests. It has also been noted to occur frequently in grassy areas at the edge of forests, unkempt lawns, and suburban area where the ground has been recently disturbed. A widely distributed and common species, it fruits from the spring to the fall.

This species is widely distributed in North America. It is also found in the Azores, Australia, and Scotland.

References:

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Taxonomy
KingdomFungi
DivisionBasidiomycota
ClassAgaricomycetes
OrderAgaricales
FamilyAmanitaceae
GenusAmanita
SpeciesA. vaginata
Photographed in
United States of America