1(5 Class III. Order 1. 



Spikes several, in a cyme or umbel about an inch below the tip, 

 oblong and closely imbricate. Peduncles smooth, compressed, 

 unequal. In deep water at Fresh Pond and elsewhere. June, 

 July. Perennial. 



18. ERIOPHORUM. 

 ERIOPHORUM ANGUSTIFOLIUM. Reich. Common cotton grass. 



O 



Culm round ; leaves channelled, triangular at 

 the tip ; spikes several, on flower stalks. 



This grass is sufficiently conspicuous by the cotton like tufts, 

 it supports throughout the summer. Stem round, smooth. 

 Leaves a little shorter than the stem, smooth, channelled, ter- 

 minating in a slender three sided point. Spikes ovate, nodding, 

 on peduncles of different lengths, commonly simple, rarely com- 

 pound. Glumes brown with a scarious margin. Tufts of hair 

 fine, whitish, of a silken appearance. Common in meadows. 

 Perennial. 



ERIOPHORUM CYPERINUM. L. Red cotton grass. 



Culm slightly three sided, leafy ; panicle more 

 than decompound, proliferous ; spikelets numerous. 



Syn. SCIRPUS ERIOPHORUM. Mich. 



A common and very tall meadow grass. Culm erect, firm, 

 smooth, leafy, round, a little compressed on three sides. Pani- 

 cle umbelled, nodding, terminal, with a large leafy involucre. 

 Peduncles numerous, unequal, rough, supporting other panicles 

 or umbels, with smaller involucres. Spikelets in heads, very 

 numerous, small, ovate, covered with dull reddish wool. Au- 

 gust. Perennial. 



19. SPARTINA. 

 SPARTINA C\NOSUROIDES. Muhl. Rough grass. 



Spikes numerous, alternate or scattered ; pe- 



