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A user-friendly point-and-click key to the
 M
ushrooms of North America
(Copyrightę1998-2003 Edward J. Polasek)

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Key 1
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
Key 9
Key 10

 

Key 2.1

Amanitas

 

Is the volva and/or veil hairy to membranous?

Yes

Is the volva or veil glutinous and/or slimy?

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You have a Limacella glischra

 

Top

 

 

 

 

 

 

 

 

 

 

 

Does it have a sac-like cup at the base and is the volva persistent?

Yes

Is the volva in fragments over bulb, or in soil, or on stalk?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

Is the amanita pure white with no warts on the cap?

Yes

Does the amanita have a colored cap? ...............

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. Virosa, A verna, or A. bisporigera

These can not be distinguished in the field and all are deadly poisonous!

 

Top

 

 

 

 

 

 

 

 

 

 

 

Is the cap free of warts or patches? .......................

Yes

Is the cap slender, dark brown, and covered with warts or a large patch?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

Is the veil absent?

Yes

Is the veil present?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

You have an A. vaginata or one of the related varieties

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the cap yellow-green to green with the veil and gills white?

Yes

Is the cap yellow to orange with the veil and gills yellow?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

You have an A. phalloides 

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. caesarea

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the cap pure white?

Yes

Is the cap colored?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

Does the cap have small warts and hair, along with an odor of chlorine?

Yes

Is the amanita odorless with pyramid-like cap with warts or hairs at the margin?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. chlorinasma

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. cokeri

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the cap brown to reddish-brown?

Yes

Is the cap yellow, orange, green, or red?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the stalk white? ..................

Yes

Is the stalk gray? ...................

Yes

Is the stalk pinkish or stained red-brown?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

Is the bulb cleft or split and the cap a dark brown?

Yes

Is the bulb not split and the cap a light to dark brown?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. brunnescens

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. pantherina

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. inaurata

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the stalk covered with pale gray hairs and the cap brown with large gray warts?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. porphyria

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the cap light reddish-brown with olive-gray warts?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. rubescens

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the cap light yellowish to green?

Yes

Is the cap yellow, orange to red?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

Is the cap green to light-green with pink-tinted volva patches?

Yes

Is the cap light-yellowish with white volval patches?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

You have an A. citrina 

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. gemmata

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the cap small with warts and the volva yellow?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the cap bright orange to yellow orange, the veil whitish, and cuticle near the base white? ..................

Yes

Is the cap even yellow, the veil yellow to flesh and/or the cuticle of the stalk tinted red?

Yes

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. flavoconia

 

Top

 

 

 

 

 

 

 

 

 

 

 

 

 

You have an A. flavorubescens

 

Top

 

 

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Copyrightę1998-2003 Edward J. Polasek
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