368 HORTUS GRAMINEUS WOBURNENSIS. 



A light rich siliceous soil appears to be best adapted to its growth. 

 In the Hortus Kewensis it is said to have been cultivated, in 1758, 

 by Mr. Philip Miller. 



ELYMUS hystrix. Rough Lyme-grass. 



Specific character: Spike upright; spikelets without the in- 

 volucre, spreading. 



Obs. Spike compounded of two spikelets at each tooth of the 



rachis ; spikelets 4-flowered, with long awns. The place of 



the involucre is supplied by two calluses. Linn. Spec. 



Hort. Gram. Fol. 267. 



Native of the Levant. Root perennial. Introduced in 1770, by 



M. Richard. Hort. Kew. 



Experiments. At the time of flowering, the produce from a 

 rich siliceous sandy loam is 



Produce per Acre, 

 dr. qr. Ibs. 



Grass, 40 oz. The produce per acre - 27225 



80 dr. of grass weigh, when dry 40 > 13512 8 



The produce of the space, ditto - 230 3 

 The weight lost by the produce of one acre in drying 1 3612 8 

 64 dr. of grass afford of nutritive matter 22) ^^ 7 JQ 

 The produce of the space, ditto 25 ) 



The harsh, broad, thin, light-green leaves of this species, and 

 likewise of those of the E. striatus and E. Sibericus, indicate that 

 they are naturally inhabitants of woods or wet shady places. 

 Grasses of this description are generally (indeed in every instance 

 that has come under my observation) deficient in nutritive matter, 

 and contain an excess of bitter extractive matter. Cattle appear 

 to dislike these grasses ; oxen ate the Philadelphian lyme-grass 

 when it was offered to them, but they refused the striated, Siberian, 

 and rough lyme-grasses. From the above details, there is no au- 

 thority for recommending the rough lyme-grass to the notice of the 

 Agriculturist. 



It flowers in the second week of July, and ripens the seed in the 

 second week of August. 



ELYMUS arenarius. Upright Sea Lyme-grass, Starr, or Bent. 



Specific character : Spike upright, close ; main stalk not winged,; 

 calyx lanceolate, the length of the spikelets ; leaves spinous- 



