160 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 
Fruit rare, spring. LircHFIELD: Salisbury (1905), Nichols. 
FatrFIELD: Sherman, Nichols. 
Arctic America, Canada, and the northern United States, 
south to the mountains of Utah; Europe; Asia; Africa. 
Rhytidiadelphus (Lindb.) Warnst. 
Stem leaves multiplicate, rough at back.......... R. triquetrus 
Stem leaves not plicate, smooth at back......... R. squarrosus 
Rhytidiadelphus triquetrus (L.) Warnst. Hypnum 
triquetrum L. Hylocomium triquetrum Br. & Sch. 
On the ground in swampy or dry woods. Fruit occasional, 
early spring. LircHFIeLp: Cornwall, Brewster; Salisbury, 
Nichols. HartForp: Plainville, Chamberlain; West Hart- 
ford, Miss Lorenz. Tottanp: Stafford, Nichols. WinpHAM: 
Canterbury, Mrs. Hadley. FairFIELD: Sherman, Nichols. 
New Haven: East Haven (1855), Eaton; Hamden, J. A. 
Allen; New Haven, Eaton; North Branford, Evans; Wood- 
bridge, Eaton. NEw Lonpon: Griswold, C. B. Graves. 
Arctic America, Canada, and the northern United States; 
south in the east to North Carolina; Europe; Asia; Africa. 
Rer. Eaton, 15, 68. 
Rhytidiadelphus squarrosus (L.) Warnst. Hypnum 
squarrosum L. 
Meadows and wet grassy places. Fruit rare, spring. NEw 
Haven: Hamden (1880), J. A. Allen. 
Arctic America, Canada, and the northern United States; 
Europe; Asia; Azores. 
Rhytidium (Sull.) Kindb. 
Rhytidium rugosum (Ehrh.) Kindb. Hypnum rugosum 
Ehrh. 
In dry grassy places and on sunny rocks, usually calcar- 
eous, in mountainous or hilly regions. Fruit very rare, sum- 
mer. LitcHFIELD: Salisbury, Mrs. Phelps. FAIRFIELD: Sher- 
man, Nichols. New Haven: Meriden (1873), Eaton. 
Arctic America, Canada, and the northern United States; 
Europe; Asia. 
