64 Cincinnati Society of Natural History. 



ous-granulose, ocbraccous; the disk rugose-plicate; the margin more 

 or less undulate or irregular. Stipe somewhat bulbous, tapering up- 

 ward, curved or crooked, stuffed, furfuraceous-scaly and ochraceous 

 below the annulus, pallid or brownish above; the annulus reflexed, per- 

 sistent. Lamellae adnate, whitish. Spores subelliptic .005 X •00'^ n^™- 

 (See Plate III.) 



Gregarious or csespitose, growing on or near rotten stumps and logs 

 in woods. Pileus 2-3^ in. in diameter, stipe 2-4 in. long, ^ an inch thick 

 at the base. Related to A. amianthinus, Scop., but a ver3'^ much larger 

 plant, and with a different mode of growth. 



C. Pileus with a viscid cuticle. 



22. A. OBLiTus, Peck. — Pileus fleshy, convex or expanded, somewhat 

 umbonate, viscid, alutaceous or brownish. Stipe nearly equal, floccose, 

 viscid; the annulus obsolete. Lamellje free, whitish or yellowish. 

 Spores .004X.003 mm. 



In woods, common. Pileus 2-3 in. broad, stipe 2-3 in. long. This 

 is readily recognized by its brownish, viscid pileus. 



Note — A. clypeolarids, Bull., of Lea's list, is omitted. I am disposed 

 to think the A. clypeolarius of Fries' Icones has not yet been found 

 in this countr}'. The Lepiotas are very interesting plants, and I am 

 aware that I have not here exhausted the list of those that grow in our 

 valley ; several of those given need more studj^ and the measurement 

 of the spores. 



Subgenus III. — Armillaria, Fr. 



Spores white. Hymenophore confluent with the stipe. Veil partial 

 annuliforni. 



23. A. MELLEUS, FI. D. — Pileus flesh3\ thin, explanate, scaly-pilose ; 

 the margin when expanded, striate, stipe spongy-stuffed; the annulus 

 floccose, spreading. Lamellae adnate, decurrent by a tooth, rather dis- 

 tant, pallid, at length somewhat reddish-spotted, meal.y with the spores. 

 Spores .008-.009X-005-.00G mm. 



Verj' abundant in autumn in woods and fields about old stumps. 



Pileus commonly 3-5 in. across, and stipe 4-6 in. high; though tiiese 

 measurements are exceeded. It occurs solitary', and is often densely 

 ciBspitose. The color is reddish or yellowish, the scales sometimes be- 

 coming brown; the stipe is firm, elastic and solid, more or less fibril- 

 lose. This is the only Armillaria as yet detected in the Miami valley. 



