304 HORTUS GRAMTNEUS WOBURNENSIS. 



64 dr. of grass afford of nutritive matter 

 The produce of the space, ditto 



The produce of latter-math is — 

 Grass, 5 oz. The produce per acre 

 64 dr. of grass afford of nutritive matter 

 The produce of the space, ditto 



The produce of this grass is greater than its appearance when 

 growing would indicate; the leaves seldom attain to more than 

 four or five inches in length. Its growth is not rapid after being 

 cropped, nor does it seem to withstand the effects of frost, which, 

 if it happen to come severe, or early in the spring, prevents it from 

 flowering in that season ; otherwise the comparatively great quan- 

 tity of nutritive matter the foliage affords (for the culms are very 

 inconsiderable), might rank it with the grasses valuable for per- 

 manent pasture. 



If the weight of produce, and the nutritive matter it contains, 

 be compared with those of the alpine grasses that are included 

 in this series of experiments, the blue moor-grass will be found 

 greatly superior. It is said to grow wild in mountainous pastures 

 in the North of England, and sometimes in marshes, in crevices 

 of the limestone rocks at the foot of Ingleborough, lime rocks 

 near Kendal, Malham Cone, and on most of the lime rocks in 

 Craven, Yorkshire.* 



Though, as already observed, it is the best of the alpine grasses, 

 yet the above details of its properties do not warrant any recom- 

 mendation of its cultivation to the Farmer.f 



It flowers about the end of April and the beginning of May, and 

 the seed is ripe in the first and second weeks of June. 



A IRA cristata. Crested Hair-grass. 



Poa cristata. Crested Meadow-grass. Host. ii. p. 54, t. 75. 

 Specific character: Panicle spike-like ; husks acuminate ; flowers 

 longer than the calyx; leaves ciliated; glumes all pointed. 

 Sm. Engl. Fl. i. p. 101. 



* Withering's Arrangements, ii. p. 140. 



t " Cynosurus cceruleus is particularly liked by sheep, and may be used for the 

 fattening of mutton, but makes the wool coarse (observation by the Wetterauer 

 Gesellschaft)." — Frederick Schmidt, Esq., from the German translation of the first 

 account of the above results of experiments on this species of grass. 



