152 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 
Fruit rare, autumn. ToLLtanp: Stafford, Nichols. NEw 
Haven: Cheshire, Evans; Hamden (1876), Pease. 
Nova Scotia to Manitoba, south to Maryland and Missouri. 
Rer. Eaton, 15, 67. 
Isopterygium turfaceum Lindb. Hypnum turfaceum 
Lindb. 
In peat bogs or on moist rich soil in the woods. Early 
summer. LitcHFIELD: Salisbury, Nichols. New Haven: 
East Haven, Nichols; Woodbridge (1880), J. A. Allen. 
Canada south to Georgia and Texas; Europe. 
Isopterygium Muellerianum (Schimp.) Lindb. Hypnum 
Muellerianum Hook. f. 
Moist rocks and earth in mountainous or hilly ravines. 
Fruit rare, late summer. Lircurietp: Salisbury, Miss Lo- 
reng. THIARTFoRD: Manchester, Miss Lorenz. New Haven: 
Beacon Falls, Nichols; Hamden (1880), J. A. Allen. Mup- 
DLESEX: Killingworth, Nichols. _ 
New England to North Carolina and Ohio; Europe; Asia. 
Isopterygium elegans (Hook.) Lindb. Hypnum elegans 
Hook. 
On the ground and rocks in mountainous or hilly woods. 
Summer. New Haven: Beacon Falls, Nichols; Woodbridge 
(1879), J. A. Allen. 
Throughout northern North America, and south along the 
mountains to Alabama; Europe; Asia. 
Plagiothecium Br. & Sch. 
1. Leaves equally spreading, alar cells greatly enlarged; 
branches erect ......... 0. cece cece ence eeeeee P. striatellum 
Leaves more or less complanate................---0--00- 2 
2. Teeth of peristome not confluent at base and without cross 
striations on outer surface; cilia lacking...... P. latebricola 
Teeth of peristome confluent at base and distinctly trans- 
versely striate on outer surface; cilia present.......... 3 
3. Monoicous; stems depressed; leaves distinctly complanate, 
pale green, very glossy............0000000- P. denticulatum 
DiGiCOUs wk Ste eciseek seeks wid ree died east ewe Ed see 4 
