1
1. Cap and/or stalk bruising blue or greenish blue, sometimes very slowly - - -
Psilocybe pp. 719-725
1. Not as above - - -
2
2
Back to 1
2. Cap and stalk greenish blue or bluish green; not bruising blue or green - - -
Stropharia aeruginosa p. 725
2. Not as above - - -
3
3
Back to 2
3. Gills free; ring present; spore print dark brownish or tinged purplish brown - - -
Agaricus pp. 500-509
3. Gills attached to stalk or, if free, dissolving at maturity into inky mass - - -
4
4
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4. Gills descending stalk; mushroom fleshy; spore print smoky-gray to blackish - - -
5
4. Gills not descending stalk or mushroom small and fragile - - -
6
5
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5. Mushroom flesh white - - -
Gomphidius pp. 652-653
5. Mushroom flesh pinkish to orange - - -
Chroogomphus pp. 650-651
6
Back to 4
6. Gills dissolving at maturity into inky mass - - -
Coprinus pp. 596-602
6. Gills not dissolving - - -
7
7
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7. Cap radially lined; spore print black; typically in masses - - -
Coprinus disseminatus p. 598
7. Not as above - - -
8
8
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8. Stalk typically whitish and fragile; cap dull brownish, moist; on wood debris - - -
Psathyrella pp. 604-609
8. Not as above - - -
9
9
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9. Cap dingy white; spore print blackish; growing on Coprinus comatus - - -
Psathyrella epimyces p. 606
9. Not as above - - -
10
10
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10. Cap rusty brown, fading; persistent ring on stalk; on ground in woods - - -
Psathyrella longistriata p. 608
10. Not as above - - -
11
11
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11. Mushrooms of lawns and grassy areas - - -
12
11. Not as above - - -
14
12
Back to 11
12. Cap slimy-sticky, yellow; ring on short white stalk; spore print purple-brown - - -
Stropharia coronilla p. 727
12. Not as above - - -
13
13
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13. Brownish scaly-hairy cap and stalk; partial veil present; spore print black-brown - - -
Psathyrella velutina p. 609
13. Brownish cap fading in bands; stalk off-white, thin, smooth; spore print dark - - -
Psathyrella foenisecii p. 606
14
Back to 11
14. Spore print black; gills mottled on maturity; on dung - - -
Paneolus pp. 602-604
14. Spore print purple brown to purple-black; gills not mottled - - -
15
15
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15. Caps colorful; clustered on wood; partial veil present, evanescent - - -
Naematoloma pp. 708-710
15. Not as above - - -
16
16
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16. Tawny cap; long thin stalk; in troops on wood debris-along roadsides - - -
Naematoloma dispersum p. 709
16. Not as above - - -
17
17
Back to 16
17. Cap fleshy, often large, usually colorful; stalk with ring; cords at stalk base - - -
Stropharia pp. 725-730
17. Usually small, fragile, brownish mushrooms; if ring present, then bruising blue - - -
Psilocybe pp. 719-725
Mushroom, the journal for all seasons