HORTUS GRAMINEUS WOBURNENSIS. 341 



AGROSTIS canina, var. mutica. Awnless Variety of Brown- 

 bent. 



Trichodium caninum muticum. (Schrader.) Creeping-stalked 

 brown-bent. Hort. Gram. Fol. 227. 



Specific character: Panicle branches subdivided, roughish ; 

 corolla of one husk awnless. 



Obs. — In the Flora Gerraanica this grass is made a variety of 

 the Agrostis canina of Dr. Smith. " Trichodium caninum, var. 

 Jforihus omnibus muticis.''' Flo. Ger. 198. It differs but little 

 from the Agrostis nixea, except in the want of the awns and 

 the length of the culms. The structure varies almost imper- 

 ceptibly in the Agrostis canina, Agrostis nivea, and in this 

 species. The like gradual shades of difference may be per- 

 ceived in the colour of the plants : the canina is of a brownish 

 green colour ; this awnless variety is of a pale green ; the 

 nivea of a greenish straw colour. The knots or bundles of 

 leaves attached to the decumbent shoots, shew- it to be con- 

 nected with the Agrostis canina fascicularis. 



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



bog soil is — 



Produce per Acre. 

 dr. qr. lbs. 



Grass, 8 oz. The produce per acre - - 5445 



80 dr. of grass weigh, when dry - 22 7 j^g^ q q 

 The produce of the space, ditto - 35 Of 3 



The weight lost by the produce of one acre in drying 3947 10 

 64 dr. of grass afford of nutritive matter 13 7 ,^g ,. q 

 The produce of the space, ditto - 3 2 3 



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

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



80 dr. of grass weigh, when dry - 34 7 260'^ 5 4 

 The produce of the space, ditto - 61 3 



The weight lost by the produce of one acre in drying 3521 4 12 

 64 dr. of grass afford of nutritive matter 2 2 7 qqq 4 u 

 The produce of the space, ditto - 5 2| 3 



It will have been remarked, from the perusal of the foregoing 

 statements, that the stoloniferous grasses afford more nutritive 

 matter at the time, and after the seed is ripe, than at the time of 

 flowering. The decumbent stems, or runners, of this grass, 

 furnished with tufts of leaves at the joints, illustrate, in some 



