Amanita brunnescens
Key to Gilled Mushrooms KeyThis is a key to gilled mushrooms, that is, mushrooms having a definite cap with a fertile surface consisting of gills. The fruiting body usually also has a stem, although that may be lateral or absent (usually, then, the mushroom is growing from wood). You can use this key to identify mushrooms that you find.
Agaricales OrderFruiting body containing fibers (usually in the stalk)
Amanita GenusFruiting body having a combination of some of the following characteristics:
Stalk growing out of a cup of cottony tissue called a volva (all white-spored mushrooms with a volva go here)
Cap with scattered patches or flakes of the same sort of tissue as the volva (see second picture), easily peeled off
Annulus (skirt-like ring on stalk)
Phalloideae SectionAnnulus always present
Either volva present, sack-like and cap either white or olive brown, or
Stalk with a basal bulb and cap either greyish brown or yellow
Bulbous Phalloideae SubSectionNo volva
Base of stalk bulbous
Cap brownish or yellowish
Here are the characters that distinguish this species from the others in its group. For its more general characters, see higher up on the page.
If there's just a few words or a microscopic feature here, a more thorough description can be found above.
Diagnosis
- Prominent, slightly rimmed basal bulb which is split vertically in several places around the edge
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Cap brownish-grey, slightly virgate
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Flesh bruising reddish brown
Microscropic Characters
- Spores 7.5-9 x 7-8 µm, round to almost round
Comments
Sometimes the cap is splotchy: brown areas on a white background. See Amanita aestivalis for discussion
