Class III. Order III. 37 



the bristles ; culm filiform, angular above ; leaves 

 setaceous. 



A small and exceedingly delicate festuca. Found in dry pas- 

 tures at Dorchester. June. 



Subgenus GLYCERIA. Corolla unarmed ; nectaries collate- 

 ral connate. 



FESTUCA FLUITANS. JL. Floating Fescue grass. 



Panicle slightly branched, leaning ; spikelets linear, 

 eight to twelve flowered ; florets very obtuse, seven 

 nerved. 



Syn. G-LrcERiA FLUITANS. R. Brown. 

 POA FLUITANS. Smith. 



A thrifty aquatic grass, found in wet meadows and the edges 

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

 Leaves flat, smooth, the Tower ones loose and floating. Sheaths 

 long, compressed. Panicle very long, nearly erect, with alter- 

 nate branches pressed near to the stalk. Spikelets linear, round, 

 upright. Calyx unequal, smooth, not very acute. Corollas very 

 obtuse. Anthers short and round. This grass thrives in inun- 

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

 July.- -Perennial. 



FESTUCA ACUTIFLORA. ^cute Fescue grass. 



Panicle simple, elongated, appressed ; spikelets 

 linear ; florets distinct, attenuated, acute, indistinctly 

 nerved. 



Syn. GLYCERIA ACUTIFLORA. Torrey. 



This grass in size and habit resembles the preceding, but the 

 leaves are shorter, and the glumes of the corollas are attenuated 

 to a sharp point, the upper valve bifid. In my specimens the 

 spikelets are about twelve flowered. Ditches. Dorchester. 

 June. 



42. BROMUS. 



BROMUS SECALINUS. L. Rye Brome grass. 



Panicle spreading ; peduncles but little branched ; 



