108 TWENTY-FIFTH REPORT ON THE STATE MUSEUM. 
tour I detected it in two localities; one in the ravine below Rain- 
bow Falls, near the outlet of Lower Ausable Lake, the other at 
the base of Bartlett Mt. Probably it occurs in other places east 
of Mt. Marcy and in the ravines of the Gothics. : 
W oopsIA GLABELLA 2. Br. 
‘The form at Lake Avalanche is larger than that at Little Falls 
and approaches more closely in appearance to W. Llvensis. 
Borrycuium stmpLex Hitch. 
Otisco. S. WV. Cowles. 
OrrHotricHum OanapensE Gr. & Sch. 
Most of the specimens formerly referred to this species are now 
considered to be O. Ohioense 8. & L., ined. 
OrrHoTRICHUM LEIOcCARPUM Abr. & Sch. 
The specimens formerly referred to this species are a form of 
O. speciosum Nees, with the dry capsule entirely smooth. It may 
be distinguished from O. lecocarpum by its having only eight cilia. 
ORTHOTRICHUM PSILOCARPUM /ames. 
This is synonymous with O. pusdlum Mitten, by which it is 
antedated. 
HyYPNUM MICROCARPUM V. ANISocARPUM Bry. Hur. 
Helderberg Mts. Austin. Remarkable for the very long 
rostrum of the operculum. 
PLAGIOTHECIUM PILIFERUM V. BREVIPILUM Bry. Hur. 
The sterile form somewhat doubtfully thus referred in a former 
report is found to he Plagiothectum Mullerianum Schp. Mr. 
Austin sends fertile specimens trom Sam’s Point, Ulster county. 
Acaricus Americants Pk. 
This plant sometimes grows in large tufts of twenty or thirty 
individuals. It is at first nearly white. The annulus is slightly 
attached to the stem and is sometimes fugacious. The spores are 
broadly ovate or subglobose, generally nucleate, .00035' long. 
AGARICUS OCHROPURPUREUS Berk. 
This species is found from June to September. It occurred in 
Greenbush the past season in great abundance. Jt often manifests 
a tendency to grow in circles. 
