140 MIDDLESEX FLORA. 



Besides furnishing species not otherwise represented, and new 

 localities for other species, Miss Cutnmings has revised the lists of 

 Musci and Hepaticae, which otherwise would have been much more 

 incomplete. 



EPHEMERUM, Hampe. 



E. serratum, Hampe, var. angustifolium, Schimp. 

 Cambridge (T. P. James; Lesq. & James, Man.) 



PHYSCOMITRELLA, Schimp. 



P. patens, Schimp. 

 Chelmsford (Rev. J. L. Russell). 



BRUCHIA, Schwaegr. 



B. flexuosa, Muell.? 



Cambridge (T. P. James) ; if this is the plant mentioned in the 

 Trans. Am. Phil. Soc., Vol. XIII., under the name of B. flexuosa, 

 Schwaegr., var. nigrescens. 



WEISIA, Hedw. 

 W. viridula, Brid. 



Very common. 

 W. viridula, Brid., var. gymnostomoides, Muell. 



Cambridge (T. P. James) in Trans. Am. Phil. Soc., Vol. XIII. , as 



Hymenostomum microstomum, R. Br. 



DICRANELLA, Schimp. 



D. varia, Schimp. ? 



Chelmsford (Rev. J. L. Russell) ; as Dicranum varium, Hedw. 



Possibly there may have been a mistake in this determination. 

 D. heteromalla, Schimp. 



Waltham (Mrs. S. E. French). 



DICRANUM, Hedw. 



D. viride, Schimp. 



Newton (C. E. Faxon). 

 D. flagellare, Hedw. 



Waltham (Mrs. S. E. French). 

 D. fulvum, Hook. 



Waltham (Mrs. S. E. French). 

 D. longifolium, Hedw. 



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

 D. scoparium, Hedw. 



Waltham (Mrs. S. E. French) ; Natick, common (Miss C. E. Cum- 



mings) . 



