Murrill: Dark-spored Agarics 



207 



10. Agaricus Rodmani Peck, Ann. Rep. N. Y. State Mus. 36 : 



45. 1884 



Pileus rather thick, firm, at first convex, then nearly or quite 

 plane, 5-10 cm. broad ; surface smooth or rarely slightly rimose- 

 squamose on the disk, white or whitish, becoming yellowish or sub- 

 ochraceous on the disk ; context white, unchanging ; lamellae 

 crowded, narrow, rounded behind, free, reaching nearly or quite 

 to the stipe, at first whitish, then pink or reddish-pink, finally 

 blackish-brown ; spores broadly ellipsoid or subglobose, generally 

 uninucleate, 5-6 x 4-5/*; stipe short, subequal, solid, whitish, 

 smooth below the annulus, often furfuraceous or slightly mealy- 

 squamulose above, 5-7.5 cm. long, 12-25 mm. thick; annulus vari- 

 able, thick or thin, entire or lacerate, attached at or below the 

 middle of the stipe, often appearing double with the margins pro- 

 jecting above and below a central groove. 



Type locality : Astoria, Long Island, New York. 



Habitat ; In grassy ground and paved gutters. 



Distribution : Canada to Virginia and west to Michigan. 



Illustrations : Ann. Rep. N. Y. State Mus. 48 : pi. 9, /. 1-6; 

 Atk. Stud. Am. Fungi, /. 17; Hard, Mushr. /. 250; Kauffm. Agar. 

 Mich. pi. 45; N. Marsh. Mushr. Book, pi. 19. 



Named for Rev. Washington Rodman, who collected the types 

 on Long Island. Specimens are to be seen at Albany also from 

 Macoun, Wells, Wilson, Mackintosh, and Braendle. I have found 

 it more than once about New York City. Dr. Kauffman reports 

 it as frequent in Michigan, especially in cities, growing solitary or 

 in clusters which sometimes contain 50 or 100 individuals. 



11. Agaricus floridanus Peck, Bull. N. Y. State Mus. 150: 50. 



1911 



Pileus hemispheric or campanulate, becoming nearly plane, soli- 

 tary or subcespitose, 9-15 cm. broad; surface rimosely areolate or 

 slightly strigose, becoming glabrous, whitish with a yellow or yel- 

 lowish center; lamellae at first white, then pink, and finally dark- 

 brown or blackish ; spores globose or broadly ellipsoid, 5-6 x 4-5 fx; 

 stipe easily separable from the pileus, equal or slightly thickened at 

 the base, solid, becoming fibrous when old, whitish, 5-10 cm. long, 

 1.5-3 cm. thick; annulus small. 



Type locality : DeFuniak Springs, Florida. 



