I08 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Didymodon Hedw, 



Didymodon rubellus (Hoffm.) Br. & Sch. 



Wet, usually calcareous rocks, in mountainous or hilly re- 

 gions. Summer. Litchfield: Salisbury, Nichols. Tol- 

 land: Bolton, XicJwls. New Haven: Woodbridge (1879), 

 /. A. Allen. 



Alaska, Canada, and the northern United States ; Europe ; 

 Asia ; Africa ; Tasmania. 



Barbula Hedw. 



Leaves gradually acuminate, midrib percurrent B. fallax 



Leaves obtuse and mucronate, midrib excurrent. .B. unguiculata 



Barbula fallax Hedw. 



Moist earth, walls, and rocks, in limestone districts. Nov.- 

 Jan. Litchfield: Sahsbury (1905), Nichols. 



Canada and the northern United States, north to the arctic 

 regions ; Europe ; Asia ; Africa. 



Barbula unguiculata (Huds.) Hedw. 



On all sorts of earth formations. Winter. Litchfield: 

 Xew Alilford, Nichols. New Haven : East Haven and New 

 Haven (1855), Eaton; Orange and Oxford, Harger; Walling- 

 ford, Evans; Woodbridge, /. A. Allen. 



Probably throughout the northern United States and Can- 

 ada ; Europe ; Asia ; Africa. 



Ref. Eaton, 15, 62. 



Acaulon C. Miill. 



Acaulon muticum (Schreb.) C. Miill. Sphccrangium mu- 

 ticiun Schimp. 



Clay or earth in fields. Spring. New Haven : Hamden 

 (1878), /. A. Allen; New Haven, Eaton; Orange, /. A. Allen. 



Probably throughout temperate North America ; Europe ; 

 Africa. 



Ref. Eaton, 15, 61. 



Phascum L. 

 Phascum cuspidatum Schreb. 

 On earth in fields and grassy places. Spring. New 



