274 



Mycologia 



The type specimens were collected by Bartholomew (1838) on 

 July 28, 1895, and are in the Ellis Collection here. The Ohio 

 plants were collected by Kellerman in October in a greenhouse at 

 Columbus. 



9. Psathyrella GRACiLLiM a Peck, Bull. Torrey Club 23: 417. 



1896 



Pileus membranaceous, convex or nearly plane, 1.5-4 cm. broad; 

 surface finely striate nearly to the disk, subhyaline, bluish-white 

 with a pinkish tint, the disk yellow and commonly depressed; 

 lamellae thin, crowded, rounded behind and adnexed or nearly 

 free, light-slate-colored when young, becoming black or variegated 

 with black; spores oblong-ellipsoid, pointed at one end, 1 3.5-1 5 x 

 6-7.5 ju,; stipe slender, elongate, erect, hollow, whitish or cream- 

 colored, 7.5-12.5 cm. long, about 2 mm. thick. 



Type locality : Rooks County, Kansas. 

 Habitat : On damp ground among weeds. 

 Distribution : Pennsylvania and Kansas. 



The type specimens sent to Peck by Bartholomew (2201) were 

 collected on July 20, 1896. They resemble Coprinus Spraguei, but 

 are larger. I found the species at Ohio Pyle, Pennsylvania, in 

 July, 1905. 



10. Psathyrella debilis Peck, Bull. Torrey Club 23 : 418. 1896 



Pileus membranaceous, campanulate, umbonate, 1.5-3.5 cm. 

 broad ; surface striate nearly to the umbo, subhyaline, whitish, be- 

 coming grayish; lamellae adnate, thin, narrow, crowded, whitish 

 when young, becoming black; spores broadly ellipsoid, 13 x Sfi; 

 stipe slender, weak, flexuous, white, hollow, never erect, 5-8 cm. 

 long, 2-3.5 mm - thick. 



Type locality : Rooks County, Kansas. 



Habitat : On damp ground, attached to decaying stems. 



Distribution : Known only from the type locality. 



Collected by Bartholomew (2ipp) on July 20, 1896. A part of 

 the type collection is at Albany and a part in the Ellis Collection 

 here. According to Peck, the species suggests Psathyra gyro fie xa, 

 but differs in the umbonate pileus, the larger spores, and in having 

 no purplish tint to the lamellae. 



11. Psathyrella Clementsii Sacc. Syll. Fung. 14: 163. 1899 

 Psathyrella sulcata Clements, Bot. Surv. Neb. 3: 13. 1894. Not 



P. sulcata (Dunal) Sacc. 1887. 



