Murrill: Dark-Spored Agarics 



131 



Bulliard's figures show the gills of young plants to be nearly white, 

 becoming practically black when colored by the matured spores. 

 He did not describe the species and I do not find it in DeCandolle's 

 treatment of Bulliard's plants. Fries, according to Bresadola, con- 

 fused it with Bulliard's A. coronllla. The original spelling was 

 A. melanospernius ; although practically every author using the 

 name since Bulliard's time has abbreviated it to A. melaspermns. 

 A. bulbularis Batsch has been called a synonym, but his figure is 

 quite different from Bulliard's and shows no annulus at all. 



6. Stropharia coronilla (DC.) Quel. Champ. Jura Vosg. 237. 



1872 



Agaricus coronilla DC. Fl. Fr. 2 : 202. 1805. 



Pileus hemispheric to convex, at length expanded, 2-4 cm. broad ; 

 surface glabrous, slightly viscid, smooth, whitish or ochraceous, 

 even and whitish-floccose or appendiculate on the margin ; context 

 white, firm, with a slight, unpleasant odor ; lamellae adnate or sin- 

 uate, rather broad, crowded, pallid to dark-violet and at length 

 purplish-black, the edges whitish-fimbriate ; spores ellipsoid or 

 ovoid, smooth, violet-purple under the microscope, 8-12 x 4-6 /x; 

 stipe equal or slightly tapering upward, dry, smooth, white or 

 slightly yellowish, solid to hollow, flocculose above the annulus, 

 fibrillose below, becoming shining, 3-4 cm. long, 3-5 mm. thick; 

 annulus distant, striate above, white, persistent. 



Type locality: France. 



Habitat : On the ground in pastures, gardens, or woods. 



Distribution : Infrequent in the northeastern United States 

 westward to Wisconsin and Kansas ; also in Europe. 



Illustrations : Bull. Herb. Fr. pi. 597, f. 1; Cooke, Brit. Fungi 

 P L 535 (558) ; Pat. Tab. Fung. /. 232; Ricken, Blatterp. Deutschl. 

 pi. 63, /. 5; Trans. Wise. Acad. Sci. 17: pl. 65, f. A. 



Exsiccati: Ellis & Ev. N. Am. Fungi 3511. 



Peck thought his >S\ bilamellata might be this species. Accord- 

 ing to Kauffman, vS\ melanosperma is not very different ; and 

 Saccardo and Ricken say that >S\ obdurata is the same. Specimens 

 collected by Bartholomew in Kansas appear to agree with authentic 

 material from Bresadola and with specimens collected by me in 

 Europe. 



