64 Cincinnati Society of Natural History. 
ous-granulose, ochraceous; 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. Lamelle adnate, whitish. Spores subelliptic .005X.003 mm. 
(See Plate ITI.) 
Gregarious or ceespitose, growing on or near rotten stumps and logs 
in woods. Pileus 2-34 in. in diameter, stipe 2-4 in. long, 4 an inch thick 
at the base. Related to A. amianthinus, Scop., but a very much larger 
plant, and with a different mode of growth. 
C. Pileus with a viscid cuticle. 
22. A. optitus, Peck.—Pileus fleshy, convex or expanded, somewhat 
umbonate, viscid, alutaceous or brownish. Stipe nearly equal, floccose, 
viscid; the annulus obsolete. Lamelle free, whitish or yellowish. 
Spores .004>.003 mm. 
In woods, common. Pileus 2-3 in. broad, stipe 2-3 in. long. This 
is readily recognized by its brownish, viscid pileus. 
Notr—A. cLyProLarius, Bull., of Lea’s list, is omitted. Iam disposed 
_ to think the A. clypeolarius of Fries’ Icones has not yet been found 
in this country. 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 study and the measurement 
of the spores. 
Suseenus III.—Armivuaria, Fr. 
Spores white. Hymenophore confluent with the stipe. Veil partial 
annuliform. 
23. A. MELLEUS, F]. D.—Pileus fleshy, thin, explanate, scaly-pilose ; 
the margin when expanded, striate, stipe spongy-stuffed; the annulus 
floccose, spreading. Lamelle adnate, decurrent by a tooth, rather dis- 
tant, pallid, at length somewhat reddish-spotted, mealy with the spores. 
Spores .008-.009<.005-.006 mm, 
Very abundant in autumn in woods and fields about old stumps. 
Pileus commonly 3-5 in. across, and stipe 4-6 in. high; though these 
measurements are exceeded. It occurs solitary, and is often densely 
cespitose. The color is reddish or yellowish, the scales sometimes be- 
coming brown; the stipe is firm, elastic and solid, more or less fibril- 
lose. Thisis the only Armillaria as yet detected in the Miami valley. 
