DiPHYSCiUM, Mohr. 



MIDDLESEX FLORA. 145 



POGONATUM, B.eauv. 



p. brevicaule, Beauv. 

 Chelmsford (Rev. J. L. Russell), as Polytricbum Pennsylvanicum, 

 Iledvv. 



POLYTRICHUM, L. 



p. formosum, Hedw. 



Maiden (11. A. Young); Waltham (Mrs. S. E. French). 

 P. piliferum, Schreb. 



Common. 

 P. juniperinum, Willd. 



Common. 

 P. commune, L. 



Common. 



D. foliosum, Mohr. 

 Common. 



BUXBAUMIA, Hall. 



B. aphylla, L. 



Cascade rocks, Melrose (H. A. Young) ; Waltham (Mrs. S. E. 

 French). 



FONTINALIS, Dill. 



F. antipyretica, L., var. gigantea, Sulliv. 

 Common. 



DiCHELYMA, Myrin. 



D. capillaceum, Bruch & Schimp. 

 No. Billerica (H. A. Young) ; Cambridge (T. P. James) ; Waltham 

 (Mrs. S. E. French) ; Natick (Miss C. E. Cummings). 



D. pallescens, Bruch & Schimp. 

 Natick (Miss C E. Cummings). 



D. subulatum, M3'rin.? 

 Rev. J. L. Russell reports Fontinalis subulata, Beauv., which is a 

 synonym of this sj)ecies, as occuri-ing at Chelmsford, "hanging on 

 bushes, principally Cephalanthus oceidentalis, L., in partially 

 dessieated mill-ponds, and full of fruit in Nov." It is probable that 

 there is some mistake in the determination. 



Leptodon, Mohr. 



L. trichomitrion, Mohr. 



Waltham (Mrs. S. E. French). 



Neckera, Hedw. 

 N. pennata, Hedw. 

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



10 



