70 _THIRTIETH REPORT ON THE STATE MUSEUM. 
. ELEOCHARIS ROBBINSII Oakes. 
Lake Harris and Lake Jimmy, Essex county. At the latter 
lake it is associated with Utricwlaria resupinate and Myriop- 
hyllum tenellum. I have recently received these three species 
from Long Island. 
ScIRPUS SUBTERMINALIS Torr. 
Lake Harris and Lake Jimmy. The former lake affords a 
variety of water plants, including Brasenia peltata, Nymphea 
odorata, Nuphar advena, VN. Kalmiana, Potamogeton natans, 
P. Claytonii, P. perfoliatus and P. pectinatus. 
ScrrPus PAUCIFLORUS Light. 
Newcomb. July. 
ERIOPHORUM GRACILE Koch. 
Mud Pond near Long Lake. July. 
AGARICUS DETERSIBILIS Pk. 
I find that this name is preoccupied and must therefore be 
changed. I would substitute for it Agaricus erinaceéilus Pk. 
AGARICUS JOHNSONIANUS PA. ) 
This species occurred the past season in the original locality. 
I had not seen it till then since its discovery in 1869. 
AGARICUS (CREPIDOTUS) VERSUTUS 2. Sp. 
Pileus at first resupinate, then reflexed, sessile, thin, pure 
white, covered by a soft downy villosity, the margin incurved ; 
lamelle rather broad and subdistant, terminating in an eccen- 
tric point, rounded behind, pale, then ferruginous ; stem none ; 
spores ferruginous-brown, subelliptical, .0004’ long. 
Plant gregarious, 4’—10" broad. 
Much decayed half-buried wood, vegetable mold and even 
rocks. 
This plant was reported under the name A. chimonophilus 
B. & Br., but it is evidently a distinct species. It loves very 
damp shaded places, frequently growing in cavities and on half 
buried wood, as if avoiding the light. The villosity is of a 
peculiar soft and delicate character and is easily destroyed by 
handling the specimens. 
CoRTINARIUS COMMUNIS Pk. 
The spores of this plant have a dull brownish tinge, unlike 
those of true Cortinarii and much like those of some species of 
Pholiota. I have also found it growing from buried pine chips, 
