240 



Air a aquatica. Water Hair-grass. 



r 



Specific character: Panicle expanding; florets without awns, smooth, longer than the cal 



husks obtuse. E, Bot. 1557; Host. v. 2, t. 14; Flo. Dan. t. 381, bad figure. 

 Obs. — Culms seldom more than a foot high, with two or three joints, never 



yx; 



more. Th 



leaves are shorter than those of the preceding grass (Poa Jiuitans), and more rounded 



th 



at 



point. When in flower, they cannot be mistaken for each other: the Hair-ffrass h 

 only two flowers in each calyx; the Flote Meadow-grass, from 5 to 11. 

 Experiments. — At the time of flowering, the produce from mud, covered permanently with 



running water, is. 



dr. qr. 



Grass, 16 oz. The produce per acre 

 80 dr. of grass weigh when dry 

 The produce of the space, ditto 



oz. 



1 74240 



lbs. 



M 

 - 76 3r. 



52272 



The weight lost by the produce of one acre in drying 

 64 dr. of grass afford of nutritive matter 

 The produce of the space, ditto 



10890 

 3267 

 7623 



2 1 



9 ^0 



6125 10 



382 13 10 



This plant is an aquatic, at least I never could preserve it out of water. It is found natu- 

 rally growing in the mud of standing pools, or running waters. It is therefore unfit for cul- 

 tivation. 



Mr. Curtis says that it is the sweetest of the British grasses; but there are several species 

 which contain more sugar, in proportion to the other ingredients which compose their nutritive 



1 



.Jluitans, Elymus arenarius^ Poa nemoralis angustifolia 

 ler the like circumstances as those of the Poafltdtam 



The 



Meadow 



Flowers in the second and third weeks of July. Root perennial and creeping. 



.71 ■ 



■^-^ 



