272 HORTUS GRAMINEUS WOBURNENSIS. 



Native of Britain. Root fibrous, perennial. 

 Experiments. — At the time the seed is ripe, the produce from a 

 sandy loam is — 



Produce per Acre, 

 dr. qr. lbs. 



Grass, 9 oz. The produce per acre -' - 6125 10 



80 dr. of grass weigh, when dry - 34 > 9603 6 4 

 The produce of the space, ditto - 61 Oa5 



The weight lost by the produce of one acre in drying 3522 3 12 

 64 dr. of grass afford of nutritive matter 2 2) 039 4 « 

 The produce of the space, ditto - b 2\S 



Of the awnless variety {A. v. canina, var. mutica), 

 at the time the seed is ripe, the produce is — 

 Grass, 21 oz. The produce per acre 

 80 dr. of grass weigh, when dry - 24 



The produce of the space, ditto - 100 



The weight lost by the produce of one acre in drying 

 64 dr. of grass afford of nutritive matter 1 

 The produce of the space, ditto - 9 



The weight of nutritive matter in which the produce of one acre 

 of the awnless variety of Agrostis vulgaris canina exceeds that of 

 the awned variety is 151.8. 



Those results go to prove, that the comparative merits of the 

 jigrostis vulgaris exceed those of the Agrostis vulgaris canina nearly 

 as 2 to 1. The crop of the awnless variety is greater than that of 

 the awned, but is much less nutritive, being as 10 to 7: the spring 

 and autumn produce is likewise superior. Neither of these va- 

 rieties appears to be of much value to the Farmer. The rust 

 attacks the culms and leaves of both varieties, which gives the 

 plants a dirty brown appearance ; the Agrostis vulgaris is always 

 free from this disease. As this family of grasses has been held in 

 little esteem by Farmers, principally on account of their lateness 

 of flowering, it may be of use to bring them into one view, in the 

 order of their early produce of herbage in the spring. 



The apparent Nutr. 



difference of Time. Powers. 



dr. qr. 



J groslis vulgaris mutica {common hexii) middle of April 1 2| 



A. palustris (marsh bent) - - one week later 2 3 



A. stolonifera, var. latifolia (florin) - ditto - 3 2 



