l62 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Haven, Evans; Hamden (iSss), Eaton. Middlesex: Killing- 

 worth, Nichols. 



Newfoundland to Georgia, west to the Rocky Mountains; 

 Europe ; Asia ; Africa. 



Ref. Eaton, 15, 6y. 



Ptilium (Sull.) DeNot. 



Ptilium Crista-castrensis (L.) DeNot. Hypnum Crista- 

 castrensis L. 



On moist earth and rotten logs in mountainous or hilly 

 woods. Fruit occasional, autumn. Litchfield: Cornwall, 

 Brezvster; Norfolk, Eaton; Salisbury^ Nichols. Hartford: 

 Hartford, Mrs. Lozve. Windham : Canterbury, Mrs. Hadley. 

 New Haven : East Haven and Hamden, Eaton; Oxford, Har- 

 ger; Woodbridge (1875), Eaton. New London: Groton and 

 Montville, C. B. Graves; Norwich, Setchell; Preston, C. B. 

 Graves. 



Arctic America, Canada, and the northern United States, 

 south in the east to North Carolina ; Europe ; Asia. 



Ref. Eaton, 15, 68. 



Stereodon (Brid.) Mitt. 



1. Alar cells more or less enlarged, often inflated, hyaline 



or colored 2 



Alar cells quadrate, not enlarged 6 



2. Capsule plicate when dry; leaves serrulate above 3 



Capsule not plicate when dry 4 



3. Alar cells scarcely inflated, yellow, thick-walled. .S. curvifolius 

 Alar cells inflated, hyaline, thin-walled S. Lindbergii 



4. Capsule suberect; leaves serrulate all around, alar cells 



orange; paraphyllia numerous S. imponens 



Capsule cernuous; leaves serrulate only above, alar cells 

 green, hyaline, or yellow-brown; paraphyllia few S 



5. Mosses growing on»bark or logs in the woods S. fertilis 



Mosses growing on the ground in swamps S. pratensis 



6. Quadrate cells numerous; midrib absent or very short.... 



S. cupressiformis 

 Quadrate cells few; midrib usually reaching to middle of 

 leaf 7 



