— 16 — 
Thirty-first annual Report on the New-York State 
Museum of Natural History. 1879. 
Wir referiren selbstverständlich nur über den botanischen _ 
Theil dieses Report, der von Ch. H. Peck erstattet ist und 
zahlreiche wichtige Notizen über Pilze enthält. Da das In- 
teresse an den Pilzen Nordamerikas mehr und mehr sich 
steigert, dürfte eine Reproduction der Diagnosen der neuen 
Arten nicht unwillkommen sein. 
Agaricus (Lepiota) eristatellus Pk. Pileus con- 
vex, subumbonate, minutely mealy, especially on the margin, 
white, the disk slightly tinged with pink ; lamell® close, rounded 
behind, free, white; stem slender, whitish, hollow; spores 
subelliptical, 0,0002 inch long. Plant about 1 inch high, 
pileus 2—4 lines broad. 
Agaricus (Tricholoma) fumescens Pk. Pileus con- 
vex or expanded, dry, clothed with a very minute appressed 
tomentum, whitish ; lamellse narrow, erowded, rounded behind, 
wbitish or pale cream color, changing to a smoky blue or 
blackish color when bruised; stem short eylindrical, whitish; 
spores oblong-elliptical, .0002—.00025* long. Plant 1‘—2' high, 
pileus 1 broad, stem 2”—3" thick. 
Ground in woods. Oct. 
The species is remarkable for the smoky or blackish 
hue assumed by the lamelle when bruised, and also in 
ng.. 
Agaricus (Clitoeybe) pinophilus Pk. Pileus thin, 
convex, umbilicate or centrally depressed, glabrous, moist, 
pale tan-color, paler or alutaceous when dry; lamellee mode- 
rately close, subarcuate, adnate or slightly decurrent, whitish; 
stem equal, stuffed or hollow; glabrous or subpruinose, colored 
like the pileus; spores nearly elliptical, .0002—.00025 long; 
odor and taste resembling that of fresh meal. Plant 1/—2' 
high, pileus about 1’ broad, stem 1”—2* thick. 
Ground under pine trees. July and August. 
Agaricus (Mycena) radicatellus Pk. Pileus thin, 
campanulate, glabrous, obtuse or subumbonate, whitish, when 
striate on the margin; lamelle ascending, narrow, close, 
white; stem firm, glabrous, slender, withish, deeply rooting; 
spores subglobose, rough, .0003’—.00035° long. Plant 
15'—2' high, pileus 4*—6* broad. 
Mossy ground in woods, Sept. 
This species is easily known by the long radicular 
portion of the stem, wich penetrates the earth after the 
manner of A. radicatus. 
. Agarieus (Pleurotus) abscondens Pk. Pure white; 
pileus compact, convex or slightly depressed on the disk, 
