KEY TO CALOCYBE SPECIES OF THE NEOTROPICS
Complete descriptions can be found in the literature cited in the key couplets.
1. Basidiomata uniformly white or ivory, spores globose, 5-6.5 m m in diam. (Pegler, 1983)
....………………………….…...................................................C. eborina Pegler
1. Basidiomata with red, violet, lilac, yellow, or bluish gray colors, if pallid then disc of pileus grayish brown
.………………………………..............................................................................2
2. Basidiomata uniformly purplish red with disc of pileus darker, lamellae dark reddish-fuscous when dried, crowded, spores short ellipsoid, 3-5 x 2-4 m m, cheilocystidia hyaline, cylindric, septate (Singer, 1948)
………............................. C. rubra Rick in Singer ex Redhead & Singer
2. Basidiomata not with reddish colors
……………………………….....................................................................3
3. Pileus with brown, reddish brown or yellowish brown colors, lamellae ochraceous or yellow
………………………………….............................................................................4
3. Pileus deep violaceous, lilac, bluish gray or pale cream with a grayish brown disc, lamellae may or may not be yellowish
……………………………………….....................................................................5
4. Pileus convex-papillate, dark reddish brown, glabrous or slightly punctate, approx. 7 mm broad; lamellae ochraceous, adnexed, narrow, crowded; stipe ochraceous; cheilocystidia cylindric or fusoid (Singer, 1977)
.……………..…………….................................. C. bipigmentata Singer
4. Pileus convex-depressed, light fulvous with a pale grayish brown disc, approx. 10 mm broad; lamellae yellow, rather broad, close; stipe fuscous or fuscous yellow; cheilocystidia absent (Singer, 1977)
.…………………………………………......................... C. alneti Singer
5. Pileus pale cream with a grayish brown disc, convex-papillate; lamellae white, adnexed; stipe pale sordid (Singer, 1977)
……………………………………….................................... C. coniceps Singer
5. Pileus violaceus, lilac or bluish gray
………………………………….............................................................................6
6. Pileus bluish gray with a fuliginous disc, convex with prominent papilla, 13-18 mm broad; lamellae white, subdecurrent; stipe fuliginous (Singer, 1977)
..…. ……………….….......................................... C. atropapillata Singer
6. Pileus violaceous or lilac, greater than 20 mm broad
..………………………………………………..........................................7
7. Lamellae with violaceous or lilac hues (Pegler, 1983)
………………………………………………..... C. cyanocephala (Pat.) Pegler
7. Lamellae yellow or white
…………………….................................................................................................8
8. Lamellae white, stipe bluish; pileipellis a cutis (Singer, 1948)
….………….......................... C. cyanella Singer ex Redhead & Singer
8. Lamellae yellow, stipe yellow with violet fibrils; pileipellis hymeniform
………….................................................................................... C. cyanea