MIDDLESEX FLORA. 147 



H. delicatulum, L. 



Natick (Miss C. E. Cummings). H. tamariscinum, Hedw., reported 



from Townsend (Miss H. E. Haynes) ; Maiden (H. A. Young) ; 



Walthani (Mrs. S. E. Frencli) ; probably belongs here; also H. 



proliferum, L., reported from Chelmsford (Eev. J. L. Russell). 



Lesq. and James, Man. of Mosses of X. A., p. 326, say: "The true 



H. tamariscinum has not been found in North America, or is here 



very rare, and the specimens distributed under this name in Sulliv. 



Muse. Allegh., and Sulliv. & Lesq., Muse. Bor.-Am. Exsicc, and 



in Austin's Muse. Appal., represent mostly H. delicatulum, while 



those distributed as H. delicatulum mostly represent H. recognitum." 

 H. paluciosum, Sulliv. 



Maiden (H. A. Young). 

 H. lastum, Brid. 



Waltham (Mrs. S. E. French). 

 H. laetum, Brid., var. dentatum, Lesq. & James. 



Maiden (H. A. Young). 

 H. acuminatum, Beauv. 



X. Billerica (H. A. Young). 

 H. salebrosum, Hoftm. 



Common. 

 H. velutinum, L. 



X. Billerica and Hopkinton (H. A. Young). 

 H. rutabuium, L. 



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

 H. Novae-Angliae, Sulliv. & Lesq. 



X. Billerica and Wilmington (H. A. Young) ; Waltham (Mrs. S. E. 



French). 

 H. populeum, Hedw. 



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

 H. plumosum, Swartz. 



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

 H. Boscii, Schwaegr. 



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

 H. serru latum, Hedw. 



Xatick (Miss C. E. Cummings) ; Maiden and Hopkinton (H. A. 



Young) ; Waltham (Mrs. S. E. French) ; Chelmsford (Eev. J. L. 



Paissell). 

 H. rusciforme, Weis. 



Townsend (Miss H. E. Haynes) ; Melrose (H. A. Young). 

 H. Alleghaniense, Muell. 



Melrose (C. E. Faxon and H. A. Young). 

 H. denticulatum, L. 



Common. 



