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Glyceria aquatica, Smith. (RrEpD MEapow Grass.) 
‘¢Tpswich river marsh” (Dr. Chas. Pickering) ; West Newbury (W. 
P. Conant); Lynn (J. H. Sears). 
Gly ceria fluitans, Ff. Br. 
Shallow water. Various parts of the county, but not common. 
Glyceria acutifiora, Torr. 
In similar situations to the last. Not common. 
Glyceria maritima, Wahl. 
Along the coast. Common. 
Glyceria distans, Wahl. 
Plum Island (Oakes). 
Brizopyrum spicatum, Hook. 
Frequent on the salt marshes. 
Poa annua, Z. (Low SpPEarR-GRASs.) 
Very common. 
Poa compressa, LZ. (WIRE-GRASS.) 
Common in dry places. 
Poa serotina, EZhrhart. (FaLsE REDTOP.) 
Sometimes called Fowl Meadow-grass. Essex county (Oakes), 
Wenham, Byfield, etc. 
Poa pratensis, ZL. (COMMON MEapow-Grass; JUNE Grass; KEN- 
TUCKY BLUE-GRASS. ) 
Common, both in a cultivated and wild state. 
Poa trivialis, Z. (RovcuisH Mrapow-Grass. ) 
Ipswich (Oakes); West Newbury (W. P. Conant); environs of 
Salem (Dr. Chas. Pickering, Chron. Hist. Pl., p. 279). (Nat. from 
Eu.) 
Eragrostis pozoides, Beauv., var. megastachya. (Gray’s Man- 
ual). 
First noticed on the ‘‘dump,” So. Boston, by Mr. C. E. Pa 
Marblehead, 1878 (Mr. Bartlett). (Nat. from Eu.) 
Eragrostis capillaris, Nees. 
‘¢ Possibly introduced into New England by the aboriginal tribes; 
observed by myself in the environs of Salem, chiefly in cultivated 
ground” (Dr. Chas. Pickering, Chron. Hist. Pl., p. 810). Probably 
noticed about 1824. 
Eragrostis tenuis, Gray. 
‘“‘In the same situations with the preceding, in the environs of 
Salem, and as far as Philadelphia” (Dr. Chas. Pickering, Chron. 
Hist. Pl., p. 810). Probably noticed at the same date. There is no 
other record of this and the last species in Essex county. 
Eragrostis pilosa, Beauv. 
Salem, two stations (W. P. Conant). (Nat. from Eu.) 

