124 



Cinna arundinacea, L., var. pendula, Gray. 

 Lawrence, Danvers (J. H. Sears); West Newbury ("W. P. Conant) 

 etc. Not very common. Forms are occasionally met with, which 

 are quite near the typical plant. 



MuMenbergia sotoolifera, Trin. 



Beverly, 1878 (J. H. Sears). Rare. 

 MuKlenbergia glomerata, Trin. 



Boxford, West Newbury, Ballardvale (J. H. Sears). Swamps. 

 MuMenbergia Mexicana, Trin. 



Ballardvale (J. H. Sears) ; Salem (Jona. Tucker) ; Wenham (J. E.) . 

 Muhlenbergia sylvatica, Torr. & Gray. 



West Newbury (W. P. Conant) ; Beverly (J. H. Sears). Wenham. 

 Muhlenbergia Willdenovti, Trin. 



Burley woods, Danvers, Sept. 1877. 



Brachyelytrum aristatum, Beauv. 



Bauk of Shawsheen, Andover, near the meeting-house (J. R.) ; 

 West Newbury (W. P. Conant). 



Calamagrostis Canadensis, Beauv. (Blue Joint-Grass.) 

 Swamps and river banks. Common. 



Calamagrostis Piekeringii, Gratj. 

 Collected at Andover, near Raggett's pond, June 27, 1879 (J. R.), 

 and found abundantly in the same locality, 1880. First observed by 

 Mr. H. Little with Dr. Pickering about 1824, at the White Moun 

 tains, in N. H. 



Calamagrostis If uttalliana, Stetid. 

 Ipswich (Oakes), Wenham swamp, West Gloucester, etc. Not 

 very common. 



Calamagrostis arenaria, Both. 

 Beaches. Common. This is the species which is so useful in hold- 

 ing in check the shifting sands of our coast. Large sums have been 

 expended in planting it on Cape Cod by the state goverument. 



Oryzopsis melanocarpa, Muhl. 



Chebacco woods, Georgetown. Scarce. 

 Oryzopsis asperifolia, Michx. 



Manchester (Oakes), Chebacco woods. May 17, 1876. 

 Oryzopsis Canadensis, Torr. 



Manchester (Oakes) ; Boxford (several stations) ; Middleton (J. H. 



Sears). 



Stipa avenacea, L. (Black Oat Grass; Feather Grass.) 

 "Dry wooded hills, near the Andover turnpike, Medford" (Bigelow's 

 Fl. Bost., 2d ed., 1824) ; Blue Hills, Milton (Chas. E. Faxon). This 

 ought to be found in the southwestern portion of the county. 



