314 HORTUS GRAMINEUS WOBURNENSIS. 



The produce or value of the yellow oat is therefore superior 

 to that of the meadow oat, in the proportion nearly of 

 7 to 3. 

 The downy oat-grass (Avena pubescens) affords 



of nutritive matter from the grass at the time Ibs. 



of flowering - 366 > 5?8 



From the crop at the time the seed is ripe - 212 03 



The downy oat-grass is therefore superior to the meadow oat- 

 grass in the quantity of nutritive matter it affords from the crops 

 of one season, in the proportion nearly of 3 to 2. From these 

 facts and observations, it cannot justly be recommended for culti- 

 vation in preference to either of the two species with which it has 

 now been compared. Its nutritive matter contains a less propor- 

 tion of bitter extractive and saline matters than any other of the 

 oat-grasses that have here been submitted to experiment. 



It flowers in July, and the seed is ripe in August. 



HORDEUM pratense. Meadow Barley-grass. 



Specific character: Lateral flowers imperfect, with shorter awns ; 

 all the calyx valves bristle-shaped and rough. Sm. Engl. Fl. i. 

 p. 180; Mart. t. 108; Flo. Dan. 630 ; Moris, s. 8, t. 2, f. 6; 

 E. Bot. 409. Refer. Fig. 1. Neuter Florets. 2. Perfect 

 Floret. 3. Germen, feathered Stigmas, and Nectary. 



Obs. This species has affinity to the Hordeum murinum, wall 

 barley-grass, in appearance ; but this is strictly perennial, 

 while the Hordeum murinum is annual. The culms of the 

 Hordeum pratense are more slender, taller, and erect, sheaths 

 roundish, spike slender in comparison to that of the H. 

 murinum ; of a purple or greenish hue ; that of the H. muri- 

 num is of a dirty yellow ; husks of the calyx bristle-shaped, 

 rough, but not ciliate; awns much shorter. E. Bot. 409; 

 Host t. 33. 



German, Wiesen-Greste. 



Native of Britain. Root fibrous. Perennial. 



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



sandy loam with manure is 



Produce per Acre, 

 dr. qr. Ibs, 



Grass, 12 oz. The produce per acre 8167 8 



80 dr. of grass weigh, when dry 32 ) 



The produce of the space, ditto 76 3| > 



