No. 11.] THE BRYOPHYTES OF CONNECTICUT. 167 
Acrocladium Mitt. 
Acrocladium cuspidatum (L.) Lindb. Hypnum cuspi- 
datum L. 
Swamps, bogs, and wet meadows. Fruit rare, summer. 
LitcHFi1ELD: Salisbury, Gilman. Hartrorp: Berlin, Cole- 
man. New Haven: East Haven, Eaton; Meriden, Miss Lo- 
renz; New Haven and Orange (1855), Eaton. 
Canada and the northern United States; Europe; Asia; 
Africa. 
Rer. Eaton, 15, 68. 
Drepanocladus (C. Mill.) G. Roth 
1. Stem with a cortical layer of large, hyaline cells........... 2 
‘Stem Jacking a distinct cortical layer..................... 3 
2. Leaves distinctly plicate when moist, and usually minutely 
serrulate; plants monoicous (autoicous)..........D. aduncus 
Leaves not plicate when moist, entire; plants dioicous.. 
D. intermedius 
3. Leaves serrulate, at least near the apex; annulus lacking; 
plants monoicous (autoicous)...........00 ee eens D. fluitans 
Leaves entire; annulus distinct; plants dioicous........... 4 
4. Alar cells enlarged and forming a well-defined group which 
extends from the margin of the leaf to the midrib...... 
D. Kneiffii 
Alar cells enlarged, but not extending more than half-way 
from the margin to the midrib........... 0.00.0... cee eee 5 
5. Alar cells hyaline, becoming brown with age, and forming 
a clearly defined group; midrib 0.05-0.06 mm. wide at 
DaS@? aincisan uci toe oteee vow egg oe han ee we RIE D. subaduncus 
Alar cells yellowish brown, enlarged, but showing a 
gradual transition into the normal cells of the leaf; 
midrib 0.07-0.11 mm. wide at base..............D. Sendtneri 
Drepanocladus Kneiffii (Schimp.) Warnst. Hypnum 
aduncum var. Kneitia Schimp. 
Bogs and swamps, often in the water. Fruit rare, May- 
June. Litcurietp: Salisbury (1907), Nichols. FaAirFIELD: 
Danbury, Nichols. 
Arctic America, Canada, and the northern United States; 
Europe; Africa. 
