HORTUS GRAMINEUS WOBURNENSIS. 317 



Produce per Acre, 



dr. qr. lbs. 



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



64 dr. of grass afford of nutritive matter 2 1 > 2'"'' 11 3 

 The produce of the space, ditto - fi 3 3 

 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 2 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 Avom Jiavescens, Festuca duriuscula, 

 Festuca ovina, Aira caspitosa, 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, tind 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 Boe/imeri. Purple-stalked Cat's-tail Grass. 



Phularis ph/eoides. 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. 



P /ileum 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. 



