No. II.] THE BRYOPHYTES OK CONNECTICUT. 169 



south in the west to Utah ; Europe ; Asia ; Africa ; New Zea- 

 land. 



Hygrohypnum (Lindb.) Loeske 



1. Leaves suborbicular; alar cells yellow; midrib faint, short, 



furcate H. dilatatum 



Leaves ovate or ovate-lanceolate 2 



2. Dioicous; alar cells hyaline or yellowish; midrib reaching 



middle of leaf or beyond, simple or furcate; perichretial 



leaves not plicate H. ochraceum 



Monoicous; alar cells golden yellow to yellow-brown, 

 rarely hyaline; perichsetial leaves plicate 3 



3. Midrib absent, or short and furcate 4 



Midrib single, reaching above middle of leaf H. palustre 



4. Leaves broad (2:1), minutely serrulate to the base 



H. Mackayi 



Leaves narrower (3:1), serrulate only at the apex 



H. eugyrium 



Hygrohypnum palustre (Huds.) Loeske. Hypnum pal- 

 ustre Huds. 



Wet and periodically overflowed stones and rocks, usually 

 calcareous. Summer. New London: Montville (1894), C. B. 

 Graves. 



Canada and the northern United States ; Europe ; Asia. 



Hygrohypnum dilatatum (Wils.) Loeske. Hypnum 

 molle of some authors. 



On non-calcareous rocks and stones in rapid mountain or 

 hill brooks. Summer. Litchfield: Salisbury, Nichols. 

 Fairfield: Darien, Mrs. Loive. New Haven: Ansonia 

 (1880) and Woodbridge, O. D. Allen. 



Arctic America and Canada, south to North Carolina and 

 Colorado; Europe; Asia. 



Hygrohypnum eugyrium (Br. & Sch.) Loeske. Hypnum 

 eugyrium Schimp. 



On wet non-calcareous rocks in or near mountain or hill 

 brooks. Summer. Litchfield: Salisbury, Gilman. New 

 Haven: Beacon Falls, Nichols; Hamden (1878) and Wood- 

 bridge, /. A. Allen. 



