194 Cincinnati Society of Natui'al History. 



bilicate, plicate. Stipe horny, hollow, shining, glabrous, blackish. 

 Lnniell.T few, broad, distant, joined behind to a free collar, whitish. 



Upon trunks and leaves. Pileiis ^ an inch or less in breadth, the 

 stipe 1-2 in. long. Pileus whitish and of a uniform color or the disk 

 darker; the stipe is whitish at the ape.\. 



17. M. CAPiLLARis, n. sp. — Pileus membranaceous, convex, umbili- 

 cate. sulcate. Stipe capillary, verj- long, glabrous, shining, black with 

 a pallid apex. Lamellaj adnate to a free collar, equal, numerous, not 

 distant, pallid. 



Growing on leaves an^l sticks. Pileus 1-2 lines in diameter, the 

 stipe 2-2,} in. long. Tiie pileus is ofagrayisii or brownish-pallid color: 

 it is sulcate with 16-20 furrows which coirespond to as many lamellae 

 underneath; the stipe is very long and scarcely thicker than a hair. 

 Its place is between M. rotula and M. (jraminum ; it differs from the 

 latter in its umbilicate pileus. and from the former in its capillary 

 stipe; it is closely related to both by the free collar. 



Gends XI. — Lentinus, Fr. 



Pileus fleshy-coriaceous, tough, or in the fleshy kinds hardened 

 when mature, persistent. Lamellae thin, unequal, membranaceous; 

 the edge serrate or lacero-dentate. Spores even, white. 



A. Pileus almost entire, the stipe evident. 



a. Pileus scal\', 1, 2. 



b. Pileus villous, 3, 4. 



c. Pileus glabrous, 5-7. 



B. Pileus dimidiate, sessile, 8 10. 



A. Pileus almost entire, the stipe evident, 

 a. Pileus scaly. 



1. L. TKiitiNUs, Hull.— Pilous llcshy-coriaccous, thin, orbicular, um- 

 bilicate, whitish; scales innate, hairy, l)l;icki.sh. Stipe slender, not 

 striate, scaly; the apex somewhat veiled. Liinielht attenuate de- 

 current, verv narrow, white becoming yellowish. Spores elliptic 

 .OOGGX.OOiJ:'. mm. 



On wood (if oak. I'ilcus about 2 in. bioad, sLipe 1-2 in. long. 

 Pileus thin, the m:irgin at length split; stipe diity white. When fresh 

 very tender, when dry coriaceous. 



2. L. SULCATU8, Berk.— Pileus a little fleshy, at first somewhat conic, 

 at length hemispheric, l)roken up into scales, silky-virgate, reddish- 

 I'luwn; the margin sulcate. Stipe short, solid, furfuraceous, ccmcolor- 



