HORTUS GRAMINEUS WOBURNENSIS. 301 



cultural purposes. It is found in a wild state, on heaths chiefly. 

 I never observed that even hares cropped its herbage. Its manner 

 of growth is similar to that of the Agrostis fascicularis, only that 

 the leaves are not produced in bundles or tufts, which is so distin- 

 guishing a feature of that grass. It is seldom combined with any 

 other species of grass, but grows in detached patches on moors 

 arid heaths. 



It flowers about the beginning of August, and the seed is ripe 

 about the end of that month. 



ALOPECURUS geniculatus bulbosus. Bulbous-rooted knee- 

 jointed Foxtail-grass. 



Variety with flowers in a spike, culm knee-jointed, root bulbous. 

 Sm. Engl. Flo. i. p. 82. var. c. 



Obs. Root of this variety bulbous ; awns longer than the blos- 

 som ; sheaths wider than the thickness of the straw ; anthers 

 purple, and changing to a brown-yellow. Wither. Arr. ii. 

 p 120. Hort. Gram. Fol. 185. A. bulbosus geniculatus. 



German, Gegliedeter-Fuchsschwanz, var. 



Native of Britain. Perennial. 



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



sandy loam is 



Produce per Acre, 

 dr. qr. Ibs. 



Grass, 8 oz. The produce per acre 5445 5 



80 dr. of grass weigh, when dry 16 07 \QRQ ~ ~ 

 The produce of the space, ditto 25 2f 3 



The weight lost by the produce of one acre in drying 4356 



64 dr. of grass afford of nutritive matter 107 ^_ , 

 The produce of the space, ditto 203 



The produce and nutritive powers of this grass are evidently so 

 inconsiderable as to justify a conclusion that it is comparatively of 

 no use to the Agriculturist. I have found it but seldom in a wild 

 state. It grows on a soil of a drier nature than the fibrous-rooted 

 variety, to be spoken of hereafter. When raised from seed on a 

 moist soil it still retains the bulbous root, which goes the length 

 to prove, that if it is not a distinct species it is at least a permanent 

 variety. 



POA alpina. Alpine Meadow-grass. 



Specific character: Panicle diffused, 4 11-flowered, cordate; 



