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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. 
Muhlenbergia sobolifera, Trin. 
Beverly, 1878 (J. H. Sears). Rare. 
Muhlenbergia glomerata, Trin. 
Boxford, West Newbury, Ballardvale (J. H. Sears). Swamps. 
Muhlenbergia Mexicana, Trin. 
Ballardvale (J. H. Sears); Salem (Jona. Tucker) ; Wenham (J. R.), 
Muhlenbergia sylvatica, Torr. & Gray. 
West Newbury (W. P. Conant); Beverly (J. H. Sears). Wenhaai 
Muhlenbergia Willdenovii, Trin. 
Burley woods, Danvers, Sept. 1877. 
Brachyelytrum aristatum, Beauv. 
Bank 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 Pickeringii, Gray. 
Collected at Andover, near Haggett’s pond, June 27,1879 (J. R. y, 
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 Nuttalliana, Steud. 
Ipswich (Oakes), Wenham swamp, West Gloucester, etc. Not” 
very common. , 
Calamagrostis arenaria, Roth. 
Beaches. Common. This is the species which is so useful in hold- 
ing in check the shifting sands of ourcoast. Large sums have been 
expended in planting it on Cape Cod by the state government. 
~e 
ee oe ape gree eg be ete a “ 
Oryzopsis melanocarpa, Muhl. 
Chebacco woods, Georgetown. Scarce. 
Oryzopsis asperifolia, Michx. 
Manchester (Oakes), Chebacco woods, May 17, 1875. 
Oryzopsis Canadensis, Torr. 
Manchester (Oakes) ; Boxford (several stations) ; Middleton (J. H. — 
Sears). 
ee or << = 
Stipa avenacea, Z. (Biack Oat Grass; FEATHER GRASS.) 
“Dry wooded hills, near the Andover turnpike, Medford” (Bigelow’s j 
Fl. Bost., 2d ed., 1824); Blue Hills, Milton (Chas. E. Faxon). This 
ought to be found in the southwestern portion of the county. 
