HORTUS GRAMINEUS WOBURNENSIS. 317 



Produce per Acre, 



dr. qr. Ibs. 



The weight lost by the produce of one acre in drying 4708 13 



64 dr. of grass afford of nutritive matter 217 255 \ \ 3 

 The produce of the space, ditto 633 

 The weight of nutritive matter which is lost by 



leaving the crop till the seed be ripe, is 89 14 14 



The produce of latter-math is 



Grass, 4 oz. The produce per acre 2722 8 



64 dr. of grass afford of nutritive matter 20 85 1 4 



The grass at the time of flowering contains more nutritive 

 matter than the grass at the time the seed is ripe, in the proportion 

 of 10 to 9 ; and the grass of the latter-math is inferior to that at 

 the time of flowering as 8 to 10; and to the grass at the time the 

 seed is ripe, in the proportion of 8 to 9. 



When cultivated on a heath soil, the produce was very nearly 

 the same as the above. The produce of early herbage in the 

 spring is superior to the Avena jftavescens, Festuca duriuscula, 

 Festuca ovina, Aira ccespitosa, and indeed to any of the alpine 

 grasses, or those which affect sandy dry soils. When mown at 

 the time of flowering, it afterwards sends up culms, and the latter- 

 math consists chiefly of these ; and in point of nutritive powers, 

 the latter-math is in consequence nearly equal to the grass of the 

 flowering crop. It ripens a sufficiency of seed, which vegetates 

 freely when sown on light soils. Its comparative merits, as a grass 

 for heath soils,, are very considerable, as will appear on a com- 

 parison of their habits, produce, and nutritive qualities, mentioned 

 in the foregoing details. 



It flowers about the second week of July, and the seed is ripe 

 about the end of August. 



PHLEUM Boelimeri. Purple-stalked Cat's-tail Grass. 



Phalaris phleoides. Cat's-tail Canary-grass. Sm. Engl. Fl. i. 



p. 77; Fl. Ger. 186; E. Bot. 459; Fl. Br. 63 ; Host, v. 2, 



26, t. 34 ; Fl. Dan. t. 531 ; Hort. Gram. Fol. 207. 

 Phleum glabrum. Bernh. Erford, p. 38. Phleum phalaroides. 



Koel. Gram. p. 52. 

 Specific character: Panicle like a spike, cylindrical; husks of 



the calyx linear-lanceolate, slightly pointed, nearly smooth, 



