144 MIDDLESEX FLOEA. 



B. bimum, Sclireb. 



Melrose (H. A. Youug) ; Waltham (Mrs. S. E. French) ; Natick 



(Miss C. E. Cummings). 

 B. argenteum, L. 



Same localities as the preceding. 

 B. caespiticium, L. 



Common. 

 B. capillare, L. 



Prospect Hill, Waltham (Rev. J. L. Rnssell). 

 B. pseudotriquetrum, Schwaegr. 



Cascade Rocks, Melrose (H. A. Young). 

 B. roseum, Schreb. 



Tewksbury, Maiden, Natick, et al. 



Mnium, L. 



M. cuspidatum.Hedw. 



Common. 

 M. affine, Bland. 



Common. 

 M. hornum, L. 



Tewksbury (B. D. Greene) ; Maiden (H. A. Young). Rare. 

 M. serratum, Laich. 



Prospect Hill, Waltham (Rev. J. L. Russell), as Bryum margin- 

 atum, Dick. 

 M. stellare, Reichard. 



Waltham (Mrs. S. E. French). 

 M. cinclidioides, Huebeu. 



Maiden (H. A. Young). 



AuLACOMNiON, Schwaegr. 



A. androgynum, Schwaegr. 



Chelmsford (Rev. J. L. Russell) ; Newton (C. E. Faxon). 

 A. palustre, Schwaegr. 



Common. 

 A. heterostichum, Bruch & Schimp. 



Melrose (H. A. Youug) ; Waltham (Mrs. S. E. French) ; Natick 



(Miss C. E. Cummings). 



Atrichum, Beauv. 



A. undu latum, Beauv. 



Maiden, Melrose, Chelmsford, et al. 

 A. angustatum, Bruch & Schimp. 



Common. 



