MIDDLESEX FLOE A. 143 



O. strangulatum, Beauv. 



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



(Miss C. E. Cummings). 

 O. psilocarpum, James. 



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



O. pusillum, Bruch & Schimp. 

 O. leiocarpum, Bruch & Schimp. 



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

 O. obtusifolium, Schrad. 



Townsend (Miss H. E. Haynes) ; AValtham (Mrs. S. E. French). 



Tetraphis, Hedw. 

 T. pellucida, Hedw. 

 Common. 



Aphanorhegma, Sulliv. 



A. serratum, Sulliv. 



Chelmsford (Rev. J. L. Kussell), as Schistidium serratum, Wils.; 

 growing with Phascum patens. 



Physcomitrium, Brid. 



P. pyriforme, Brid. 

 Maiden (H. A, Young). 



Fun ARIA, Schreb. 



F. hygrometrica, Sibth. 

 Common. 



Bartramia, Hedw. 



B. pomiformis, Hedw. 

 Frequent. 



Philonotis, Brid. 

 P. fontana, Brid. 

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

 (Miss C. E. Cummings). 



Leptobryum, Schimp. 



L. pyriforme, Schimp. 

 Waltham (Mrs. S. E. French). 



Webera, Hedw. 



W. nutans, Hedw. 

 Maiden (H. A. Young) . 



Bryum, Dill. 



B. intermedium, Brid. 

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



