MIDDLESEX FLORA. 125 



P. arundinacea, L. Eeed Canaet Gkass. 

 Lowell, Concord, Maiden, Natick, et al. Not uncommon. 

 The form known as var. picta. Gray, the Ribbon Grass of the 

 gardens, occurs at Medf ord (0. E. Perkins) ; and elsewhere. It is 

 abundantly naturalized in the Medford locality, but shows a tend- 

 ency to revert to the type, of which it is probably a form rather 

 than a variety. 



ANTHOXA.NTHUM, L. 



A. ODOKATUM, L. Sweet Veknal Grass. 

 Eather common. Nat. from Eu. 



HiEEOCHLOA, Gmel. 



H. borealis, Eoem. & Sohult. Vanilla Grass. Seneca Grass. 

 Maiden (R. Frohock) ; Medford (C. E. Perkins) ; Concord (E. S. 

 Hoar). Not common. The long summer leaves of this early 

 flowering, fragrant grass, are used in small basket work. 



Alopecurus, L. 



A. pRATENSis, L. Meadow Foxtail. 

 Common. Nat. from Eu. 



A. GENicuLATUS, L. Floating Foxtail. 



Somerville, Waltham, Concord, et al. Not common. Nat. from 

 Eu. 



A. geniculatus, L., var. aristulatus, Munro. (A. aristnlatus, 

 Michx., Man.) Wild Foxtail. 

 Medford (R. Frohock) ; Fresh Pond, Cambridge (Dr. C. W. Swan). 



A. agrestis, L. 

 LoweU, " dumps " (Dr. C. W. Swan). Adv. from Eu. 

 " Culms erect, roughish above ; panicle spike-like, cylindrical, nar- 

 rowed at each end, its branches bearing 1-2 spikelets; empty 

 glumes adnate the lower half, the slightly winged keel short ciliate. 

 Annual." Koch., Taschenb. d. Deutsch. & Schw. Fl. Awn arising 

 near the base of the flowering glume and twice its length. 



Aristida, L. 



A. dichotoma, Michx. Poverty Grass. 



Maiden, Winchester, Newton, et al. Not uncommon. 

 A. gracilis. Ell. 



Lowell and Winchester (Dr. C. W. Swan) ; Waltham List; Concord 



(E. S. Hoar) ; Medford (Wm. Boott). 

 A. purpurascens, Poir. 



Medford, Concord, Framingham, Waltham, et al. Not common. 



