Class III. Order H. 



FESTUCA FLUITANS. L. Floating fescue grass. 



Panicle branched, erect ; spikelets subsessile, 

 cylindric, awnless. L. 



Sy>2. POA FLVIfAXS. Sm. 



A thrifty aquatic grass, found in wet meadows and the edg- 

 es of ponds and streams. Stems rooting at base, tall, round, 

 smooth. Leaves flat, smooth, the lower ones loose and floating. 

 Sheaths long, compressed. Panicle very long, nearly erect, 

 with alternate branches pressed near to the stalk. Spikelets 

 linear, round, upright. Calyx unequal, smooth, not very acute. 

 Anthers short and round. This grass thrives in inundated 

 grounds, and is very grateful to horses and cattle. June, July. 

 Perennial. 



51. BROMUS. 

 BROMUS SECALINUS. L. Rye Brome grass. 



Panicle spreading ; peduncles but little branch- 

 ed ; spikelets ovate, compressed, of about ten dis- 

 tinct, somewhat cylindrical florets, Sm. 



Stem erect, three feet high, smooth. Leaves flat, rough at 

 the edge and underneath, somewhat hairy above. Sheaths 

 smooth. Panicle spreading, its branches rough, unequal, most- 

 ly simple, and one flowered. Spikelets lai'ge, nearly oval, of 

 about ten florets. Calyx unequal, smooth. Outer glume of 

 the corollas swelling, with a rough awn inserted at the back a 

 little below the tip. June. Perennial. 



32. ARUNDO. 



ARUNDO PHRAGMITES. L. Common Reed. 



Calyx containing five florets, panicle loose. L 



A native of wet situations. Culm of the height of a man, 

 very erect and smooth. Leaves lanceolate, long and broad, flai 



