REPORT OF THE BOTANIST. 93 
curved margin separate this from the preceding species. (Plate 
2, figures 1-5.) 
*78. AGARICUS SEMIORBICULARIS Bull. 
Pileus thin, fleshy, hemispherical, at length expanded, 
smooth, subviscid, dull yellow; lamelle close, broad, attached, 
at length dark ferruginous; stipe slender, equal, firm, stuffed 
with a distinct whitish pith, yellowish. 
Height 1’-2’, breadth of pileus 6’—12”. 
Fields and manured grounds. West Albany. June. 
It is sometimes ceespitose. The pileus sometimes cracks 
nate areas. It has an oily flavor, resembling that of beech 
nuts. 
* Subgenus— Galera. 
Stem externally subcartilaginous ; pileus more or less cam- 
panulate ; margin straight. — Berk. Ouwtl. 
The spores are generally bright ferruginous. The pileus is 
thin, obtusely conical or bell-shaped, and the stem is hollow, 
rather long and slender, so that in aspect the species correspond 
to those of the subgenus J/ycena in the first series. All of our 
species, so far as known, are hygrophanous. 
SYNOPSIS OF THE SPECIES. 
es ALON ENN OX AIG CW's optic are's o2 vio eo afaweiciad Ne > e'aiele tree are Se ciecoieia, cal Sw Sen toe a eaters a; 
a. Plant growing in fields or on dung; pileus not umbonate.................. M9: 
a. Plant growing in marshes; pileus generally umbonate....................- ee 
VGH MEO LAG Xpand esate vchelele teloars ware oie uavcketesoranal = ate Sitesala vos wake S54 Tle 6 Oe Sone b. 
Beant oro wan en fOlLANIOr PEOVER: «seis lajaislcss < naslaiaie 0.6 cee decoesaes seisitiea eaieene c. 
Gs ileus dark ferrneinOus’< cess). tee cs a20 se ones Zhgtste) alah a, he fetdps's a:citetel area -tetereete 80. 
GiseeCuUsPaAlenyellOws. ssc ccicte oe cll stone ee sw Coca Saleen ban bag eles ols sie oe heats 81. 
bs Plant. rowing 1m; WOOdstaMONG MOA! <)..5o.oe).s ccd sie's o efe cic de epee oiciee vin Seictaeeele 83. 
79. AGARICUS LATERITIUS FY. 
Pileus thin, submembranaceous, fragile, conical, at length 
expanded, closely and finely striate on the margin, grayish- 
yellow, darker when moist; lamelle close, narrow, nearly or 
quite free, yellow-ferruginous; stipe long, white, fragile, 
easily splitting, pruinose or farinaceous above, slightly taper- 
ing upward. 
Height 3’—- 4’, breadth of pileus, 1’—2’. 
On dung heaps. West Albany. June. 
Sometimes there is a slight pinkish tinge to the pileus and 
stem. 
