JO NEW YORK STATE MUSEUM 



8-9 by 3 fx ; cystidia awl-shaped, 25-30 by 5 /x ; stipe equal, inserted, 

 horny, fistulose, brown below, light above, pruinose or very 

 slightly velvety, 2-5 cm long, 5-1 mm thick. 

 Upon dead herbaceous stems, leaves, twigs etc. Common. 



30 Marasmius caricicola Kaufl. 



North American Flora, v.g, pt 4, p. 277. 1915. 

 Mich. Geol. Sur. Bui. 1915. 



Pileus membranous, somewhat tough, pliant, convex-expended, 

 Obtuse, gregarious, 4-8 mm broad; surface broadly sulcate or 

 alveolate, pruinose, pure white; lamellae thick, adnate, very dis- 

 tant, rather broad, pure white; spores 15-18 by 6-6.5 n; basidia 

 2-spored or 4-spored; stipe very short, terete, equal, subglabrous, 

 pure white, inserted by a naked base, 2 mm long, .7 mm thick. 



Upon stems of sedges in marshes. Not yet reported from New 

 York. It is not unlikely that it may yet be found within the State. 

 It is easily overlooked because of its small size. 



31 Marasmius praeacutus Ellis 

 Torrey Club Bui. 6, p.76. 1876. 



Pileus membranous, convex to expanded, subumbilicate, 6-10 

 mm broad ; surface pulverulent, white, the disk red-tinged ; margin 

 at first incurved, subsulcate, striate; lamellae adnate, more or less 

 forked, hardly crowded, narrow, white ; spores 5-6 by 3 /x ; stipe 

 swollen below but contracted to a point at the base, hollow, reddish 

 brown, white at the base, pulverulent, 2.5 cm long, 1 mm thick. In 

 young plants, the swollen part of the stipe constitutes nearly the 

 entire plant. 



Upon dead leaves, twigs, and bark in woods. Rare. 



The peculiar appearance of the young plants and the marked con- 

 striction of the stipe at its base easily distinguish this species. 



32 Marasmius opacus Berk. & Curt. 

 Jour. Bot. & Kew Misc., 1 199. 1849. 



Pileus submembranous, convex, often slightly depressed around 

 a central umbo, 5-8 mm broad; surface rugulose, scarcely striate. 

 opauue, pulverulent, while; lamellae adnexed, distant, ventricose; 

 spores 6-7 by 3 /x; stipe institious. elongate, pulverulent, subfur- 

 furaccous, pallid, 2.5-4 cm long, 1 mm thick. 



