No. 14.] FLOWERING PLANTS AND FERNS. 79 



which it appears to have been introduced (Eames). July. 

 Adventive from Europe. 



AGROPYRON Gaertn. 



Agropyron repens (L.) Beauv. (creeping). 



Couch, Quack, Quitch, Durfee, Scutch, Shear, Dog, or Knot 



Grass. 



Common. Fields, cultivated ground and waste places. 

 June — Aug. Naturalized from Europe. 



A bad weed, very troublesome in cultivated ground. The 

 rootstocks are of medicinal value and are officinal. 



Agropyron tenerum Vasey (delicate). 



Rare. Naugatuck, in waste ground (A. E. Blewitt). July 

 — Aug. Fugitive from the western United States. 



Agropyron caninum (L.) Beauv. (of a dog). 



Awned Wheat Grass. Dog's Wheat or Couch Grass. 



Occasional or local. Dry or moist thickets, fields and 

 woods: Killingly (Weatherby & Bissell), Union, East Had- 

 dam, Southington, Norfolk and Salisbury (Bissell), Oxford 

 (Harger). July — Aug. In part naturalized from Europe. 



SECALE L. Rye. 



Secale cereale L. (cereal). 

 Rye. 



Occasional. Roadsides and waste places as an escape from 

 cultivation. June. Fugitive from Europe. 



The grain furnishes a valuable cereal and is largely used 

 in the manufacture of distilled liquors. 



TRITICUM L. Wheat. 



Triticum sativum Lam. (sown). 

 Triticum vulgare Vill. 

 Wheat. 



Local. Old fields and waste places as an escape from culti- 

 vation. June. Fugitive from Europe. 



Easily leads all other food plants in value and importance. 



