The Mycologic Flora of the Miami Valley, O. 111 
rounded behind, pale then ferruginous. Spores ferruginous-brown, 
somewhat elliptic, .010 mm. long. 
In cavities of old stumps, on much decayed, half-buried wood, ete. 
Pileus less than 1 in. broad. 
TABLE OF THE SUBGENERA OF PRATELLI. 
A. Stipe annulate. 
25. PsaLyrota.—Lamellee free from the stipe. 
26. STROoPHARIA —Lamelle adnate. 
B. Stipe not annulate. 
27. HypHotoma.—Veil woven into a web which adheres to the 
margin of the pileus. 
28, PsrtLtocyBrE.— Veil none. 
SuBGENUs XXV.—Psatuuiota, Fr. 
Stipe annulate Lamelle free. 
a. Annulus ample, not distant. 
125. A. arvensis, Scheff. Pileus fleshy, conic-campanulate then 
explanate, at first floccose-mealy, afterward almost glabrous, even or 
Yivulose. Stipe hollow, floccose-medullate; annulus pendulous, ample, 
consisting of two layers, the outer layer radiately divided. Lamelle 
free, broader in front, reddish-white then brown. Spores elliptic, 
variable in size, averaging .010 <.006 mm. 
In meadows and grassy grounds in fields. Pileus commonly 3-5 in. 
broad, and stipe 3-4 in. long, but these dimensions are often greatly 
exceeded. This is the “ Horse Mushroom” of England; it is edible, 
but is not so delicate as A. campestris. The pileus and stipe are 
white, staining yellowish when bruised. The flesh remains white or 
takes on only a yellowish tint when cut or broken. 
126, A. FaBacets, Berk.—Pileus thin, somewhat fleshy, conical, 
umbonate, at length plane. Stipe bulbous, rather slender, nearly 
glabrous; veil ample, externally floccose. Lamelle close, free, broader 
behind, brown then nearly black. Spores brown, nucleate on one side 
small, .0055 mm. long. 
On the ground amongst the old leaves in woods; common. Pileus 
3-4 in. across, stipe 3-4 in. high. The pileus is smooth, tough, feeling 
like fine kid leather, turning yellow when bruised; the stipe is bulbous 
