68 



^ 



from those that are always affected by it when transplanted to exposed situations, only that the 

 former grasses are smooth, or have their surface free from hairs ; while the latter are in general 



h 



ai 



ry 



or have their surface furnished with numerous hairs. 



B 







(spiked Wood Fescue) 



when taken from their natural places of gi'owth : these grasses have hairs, but they are minute, 



and thinly scattered on the leaves. 



The Wood Meadow-grass flowers in the third week of June, and ripens the seed in the end 



of July. 



JPoa cmgmtifolia. Narrow-leaved Meadow-grass. 



Specifc character: Panicle diffused; spikets 4-flowered, pubescent; culm erect, round. 



Linn. Spec. 99. 

 Obs, — Dr. Smith regards this as a variety of the Poa pratensis ; but as it differs much from 



that species in its agricultural merits, being much superior, I have rather followed Dr. 



Willdenow, in keeping it a distinct species, that it may more readily impress the memory. 

 Native of Britain. Root creeping. Perennial. 

 Experiments, — At the time of flowering, the pioduce from a brown loam, is. 



dr. qr. 



oz. 



Grass, 27 02. The produce per acre 



80 dr. of grass weigh, when dry 



The produce of the space, ditto 



The weight lost by the produce of one acre in drying 



64 dr, of grass afford of nutritive matter 



34 

 183 2f 



294030 



1249C2 12 



lbs. 



1837C 14 



7810 2 12 

 10566 11 4 



5 



32 

 89 



i 



The produce of the space, ditto - - 33 



At the time the seed is ripe, the produce is, 

 Grass, 14 oz. The produce per acre ^ 



80 dr. of grass weigh, when dry - p 



The produce of the space, ditto 



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 



The produce of latter-matb is. 

 Grass, 18 oz. The produce per acre 

 64 dr. of grass afford of ijutritive matter 



o 

 O 



22866 11 



1430 6 11 



152460 



9528 12 



60984 



3811 8 



5717 4 



o 



1 



18 U 



12506 7 



781 10 7 



1 



196020 

 3062 13 



The weight of nutritive matter which is lost by leaving the crop till the seed be ripe, ex- 



ceeding one-third part of its value, is 



12251 4 

 191 6 13 



649 4 



The proportional value in which the grass, at the time the seed is ripe, exceeds that at tlie 

 time of flowering, is as gl to 20. 



I 



In the early growth of the leaves of this species of Poa, there is a striking proof that the 

 property of coming early into flower, is not always connected with the early growth and pro- 

 duce of herbage in the spring. In this respect, most of the grasses that have come under exa- 

 mination, are inferior to this now spoken of. Before the middle of April, the leaves attain to 

 more than twelve inches in length, ^nd are tender and succulent. In the month of May, like- 

 wise, when the flowering culms make their appearance, it is not subject to the disease that 



