No. II.] THE BRYOPHYTES OF CONNECTICUT. 95 



51. Alar cells inflated Plagiothecium striatellum, p. 154 



Alar cells not inflated, frequently quadrate, rectangular, or 



oblong 52 



52. Annual growth regularly marked off Hylocomium, p. 161 



Annual growth not clearly defined 53 



53. Leaves erect-spreading 54 



Leaves squarrose 55 



54. Plants medium-sized, forming loose, spreading tufts; para- 



phyllia numerous and large Heterophyllon, p. 165 



Plants small, forming thin, depressed mats; paraphyllia 

 lacking Amblystegiella, p. 154 



55. Plants robust; stems 0.5-0.9 mm. in diameter; leaves 3-5 mm. 



long; capsules broadly ovoid Rhytidiadelphus, p. 160 



Plants robust or slender; stems 0.1-0.4 mm. in diameter; 



leaves 1-3 mm. long; capsules cylindrical 



Chrysohypnum, p. 15S 



FAMILY ARCHIDIACE^ 

 Archidium Brid. 

 Archidium ohioense Schimp. 



On the ground in meadows and fields. Spring. New 

 Haven: Orange (1881), O. D. Allen. 



Throughout the eastern United States and westward to 

 the Rocky Mountains. 



FAMILY DICRANACE^ 



Bruchia Schwaegr. 



Capsule ovoid, neck short B. flexuosa 



Capsule elongated, neck long B. SuUivantii 



Bruchia flexuosa (Schwaegr.) C. Miill. 



Clayey ground in fields. Spring. Windham : Canter- 

 bury, Mrs. Hadley. New Haven: East Haven, Nichols; 

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



New England to Minnesota, south to the Gulf States. 



Ref. Eaton, 15, 72. 



Bruchia SuUivantii Aust. 



Clayey or sandy ground in fields. Spring. New Haven : 

 New Haven (1890), Evans. 



New England to Florida, west to Missouri and Louisiana. 



