Murrill: Dark-Spored Agarics 



133 



Illustrations : Atk. Stud. Am. Fungi /. 30; Batsch, Elench. 

 Fung. /. no; Bull. U. S. Dept. Agr. 175 : pi. 25, f. 2; Cooke, Brit. 

 Fungi pi. 539 (567) ; Curt. Fl. Lond. pi. 104 (as A. glutinosus) ; 

 Hard, Mushr. /. 260; Hussey, 111. Brit. Myc. 1 : pi. 3$, f. 2; 

 Mycologia 4: pi. 56, f. 3; Palmer, Mushr. Am. pi. 12, f. 3, 4; Pat. 

 Tab. Fung. /. 234; Ricken, Blatterp. Deutschl. pi. 63, f. 2; Sow. 

 Engl. Fungi pi. 248; Trans. Wise. Acad. Sci. 18 : pi. 18, f. A-H. 



A very common and easily recognized species. The spores vary 

 considerably in size. Harper says there is a sterile form which 

 differs only in having the gills white, unchanging, because there 

 are no spores to blacken them. He gives an illustration of it. 



9. Stropharia adnata (Huds.) comb. nov. 



Agaricus adnatus Huds. Fl. Angl. ed. 2, 619. 1778. 



Agaricus stercorarius Schum. Enum. PI. Saell. 2: 286. 1803; 



not A. stercorarius Bull. 1781. 

 Stropharia stercoraria Quel. Champ. Jura Vosg. 112. 1872. 

 Hypholoma pecosense Cockerell, Jour. Myc. 10: 108. 1904. 



Pileus solitary or gregarious, hemispheric to expanded, 2-5 cm. 

 broad ; surface smooth, glabrous, viscid, often cracking on drying, 

 whitish or some shade of light-yellow, margin even ; context soft, 

 white or yellowish, slightly bitter ; lamellae adnate with decurrent 

 tooth, very broad, crowded, white to brownish or greenish-black, 

 whitish-flocculose on the edges ; spores smooth, elongate-ellipsoid, 

 violet-purple under the microscope, blackish-brown in mass, 16- 

 20 x 10-12 fx; stipe elongate, equal or enlarged at the base, stuffed 

 to hollow, subviscid, flocculose-scaly below the annulus, pruinose 

 above, 8 cm. or more long ; annulus distant, slight, evanescent. 



Type locality : England. 

 Habitat : On manure. 



Distribution: Temperate regions of North America; also in 

 Europe. 



Illustrations: Cooke, Brit. Fungi pi. 538 (566) ; Trans. Wise. 

 Acad. Sci. 17: pi. 67. 



Similar to 5\ semiglobata in habit and appearance, but gills be- 

 coming brownish-black or greenish-black instead of cloudy-black, 

 and spores usually lighter in color, appearing olivaceous under a 

 microscope. The cap is also not so persistently hemispheric as in 



