142 MIDDLESEX FLOKA. 



L. vaginans, Lesq. & James. 



Waltham and Maynard (Mrs. S. E. French). 

 L. pallidum, Hampe. 



Common. 



BARBULA, Hedw. 



B. unguiculata, Hedw. 



Waltham (Mrs. S. E. French). 



B. ceespitosa, Schwaegr. 



Waltham (Mrs. S. E. French) ; Hopkinton (H. A. Young). 



GRIMMIA, Ehrh. 

 G. conferta, Funck. 



Waltham (Mrs. S. E. French). 

 G. apocarpa, Hedw. 



Maiden (H. A. Young) ; Waltham (Mrs. S. E. French). 

 G. Olneyi, Sulliv. 



Lexington (Edwin Faxon). 

 G. Pennsylvanica, Schwaegr. 



Waltham (Mrs. S. E. French). 



RACOMITRIUM, Brid. 



R. Sudeticum, Bruch & Schimp. 

 Maiden and Newton (C. E. Faxon). 



HEDWIGIA, Ehrh. 

 H. ciliata, Ehrh. 



Maiden, Waltham, Natick, et al. Common. 



COSCINODON, Spreng. 



C. pulvinatus, Spreng.? 



Rev. J. L. Russell reports Fissidens pulvinatus, Hedw., which is a 

 synonym of this species, as abundant on rocks at Chelmsford ; but 

 there is no other record of its occurence in our limits, where it 

 would not be expected from its general range. 



DRUMMONDIA, Hook. 



D. clavellata, Hook. 



Waltham, on trees (Rev. J. L. Russell). 



ULOTA, Mohr. 

 U. crispula, Brid. 



Natick (Miss C. E. Cummings). 

 U. Hutchinsiae, Schimp. 

 Generally distributed. 



ORTHOTRICHUM, Hedw. 



O. sordidum, Sulliv. & Lesq. 

 Natick (MissC. E. Cummings). 



