74 GRASSES IN CERTAIN PLACES. 



2. The Aquatic or Water (iras^tcH iiro tliose which elect to }j;row 

 Ity the margins nf rivers, in brooks or ditches, or iiroinid the 

 edges of jionds. AVitli few exee})tions they jire of little value 

 ugriculturidly. Tlieir i)resen(;e is a sure iiuli(!atioii of hick of 

 tlruimige. I'he following are examples : Plialarisdrnndinacea, L. 

 (Keed Canary-CJrass), PhrafpnitcK roiii/inniis, Trin. (l{eed-Crass), 

 (ifi/rcriaaijiiatic(i, Smith, (Keed iMeadow-Clrass), Ghjceriajlintans 

 Ik. Wv. (Floating ^readow-Grass), Lecrsiaori/zoidef^, Swartz, (Kice 

 ('ut-(irass), Zi:Mni(i (uiiuUic.d, L. and Z. w/7mcm, Michx. (Indian 

 IJiee). 



'?. The Marine or Sea Si(tr (iransrs. Avhich are chielly found 

 near salt water or the (ireat Lakes. They arc generally very 

 coarse and distasteful to cattle. A great i)roportion of the plants 

 in these situations, wliicli are cut ami cured by the farmers of 

 Ts'ew England and Long Island, and tlu^ Jersey coast, and known 

 as salt marsh hav. are not grasses, hut ])elong to other families 

 of i)hints, sueh as the Jiniratrir and (!ijperacea>. The rhizomes 

 of some are very useful in ])reventing the water from Avashing 

 away the soil. Of marine grasses tlie following are examples: 

 Spartina juncea, AVilld. (Rush Salt-Orass), GJyceria ttiaritima, 

 "NVahl. (Goose-grass), Psamma iirenaria, \\. & S. (Sea Mat-weed.) 



•i. The Meadow or Pasture ilrassos. — Most of the grasses of 

 much value to agriculture belong to this section. They are the 

 leading grasses of our best meadows, pastures, and the grazing 

 lands of the prairies, and have received the most attention in 

 this work. 



Some of these are especially suited to, — 



a. Upland pastures, thin soils. 



1). Poor, stiff soils, hungry clays. 



c. Rich, deep loams. 



d. ^Meadows on the banks of rivers, subject to perennial floods. 

 c. Irrigated meadows, in which the water can be entirely con- 



