130 MIDDLESEX FLORA. 



E. pectinacea, Gray. 



Eeading (R. Frohock) ; Medford (Miss A. M. Symmes) ; Waltham 



List; Concord (E. S. Hoar). 

 E. pectinacea, Gray, var. spectabilis, Gray. 



Not uncommon. 



DiSTICHLYS, Raf. 



D. maritima, Raf. (Brizopyrum spicatum, Hook., Man.) Spike 

 Grass. Salt marshes ; common. 



Dactylis, L. 



d. glomerata, l. orchard grass. 

 Common, cultivated and spontaneous. Nat. from Eu. A variety 

 with downy spikelets at Medford (Wm. Boott). 



Briza, L. 



B. MEDIA, L. Quaking Grass. 

 Concord (E. S. Hoar; specimen in herb, of) ; Maiden, Melrose and 

 Medford (H. A. Young). Scarce. Nat. from Eu. 



POA, L. 



P. annua, L. Low Spear Grass. 



Common. 

 P. compressa, L. Wire Grass. 



Common. 

 P. serotina, Ehrh. False Red-Top. Fowl Meadow Grass. 



Common. 

 P. pratensis, L. Meadow Grass. Kentucky Blue Grass. 



Verj^ common. 



P. TRIVIALIS, L. ROUGHISH MeADOW GRASS. 



Medford and Tewksbury (Wm. Boott) ; Concord (E. S. Hoar)t 

 Specimen in the Boott Herb. Nat. from Eu. 

 P. alsodes, Gray. 

 Cambridge (Walter Deane) ; Maiden and Newton (Wm. Boott) ; 

 Medford (C. E. Perkins). Not common. 



Glyceria, R. Br. 



G. Canadensis, Trin. Rattlesnake Grass. 



Common. 

 G. obtusa, Trin. 



Common. 

 G. nervata, Trin. Fowl Meadow Grass (in part). 



Common. 

 G. pallida, Trin. 



Tewksbury, Waltham, Stoneham, et al. Not very common. 



