HORTUS GRAMINEUS WOBURNENSIS. 147 



oblong; stem and leaves roughish ; root fibrous. Sm.Engl. 

 Fl.i. p.l24. 



Refer. Fig. 1. Calyx. 2. JSpikelet of three flowers, shewing the 

 anthers and corolla valves. 3. Nectary. 4. Germen and 

 feathered stigmas. 



Obs. The great roughness of the culms and leaves manifested 

 when drawn between the fingers, the sharp-pointed sheath- 

 scale, and the fibrous root, so conspicuous in this species, 

 sufficiently distinguish it from the Poa pratensis. 



Native of Britain ; root perennial. E. Bot. 1072. Curt. Lond. 

 Host. ii. t. 62. Wither. Arr. Hort. Gram. Wob. Fol. 21. 



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



brown loam with manure is — 



Produce per Acre, 

 dr. qr. lbs. 



Grass, 11 oz. The produce per acre - 7486 14 



80 dr. of grass weigh, when dry - 24 ^ 994P i n 



The produce of the space, ditto - .54 0^^^. 5 



The weight lost by the produce of one acre in drying 5240 13 



64 dr. of grass afford of nutritive matter 2 7 oqq i- ia 



. jf ^oo 10 lU 



The produce of the space, ditto 5 2 3 



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

 Grass, 11 oz. 8 dr. The produce per acre - 7827 3 



80 dr. of grass weigh, when dry - 36 ^ Qkoo q in 

 The produce of the space, ditto - 82 3j 5 

 The weight lost by the produce of one acre in drying 4304 15 

 64 dr. of grass afford of nutritive matter 2 3^ oop r o 

 The produce of the space, ditto - 7 3g $ 



The weight of nutritive matter which is lost by taking 

 the crop at the time of flowering, exceeding one- 

 fourth of its value, is - - 102 5 12 

 The proportion which the value of the grass of the seed crop bears 

 to the value of the grass of the flowering crop is as 11 to 8. 

 The produce of latter-math is — 

 Grass, 7 oz. The produce per acre - - 4764 6 

 64 dr. of grass afford of nutritive matter 3 dr. The 



produce per acre is - - 223 5 4 



The proportional value in v.'hich the grass of the latter-math 

 exceeds that of the flowering crop, is as 3 to 2, and that of the 

 .seed crop as 1 2 to 11. 



