Class III. Order 111. 23 



SCIRPUS CAPILLARIS. L. Capillary Club rush. 



Culm capillary, triangular ; spikes ovate, two or 



three pedunculate and one sessile. 



A very delicate species, two or four inches high, sending up 

 many stems from a root. Leaves setaceous. Spikes somewhat 

 umbelled, oblong, reddish. Dry. sandy fields. August. 



SCIRPUS AUTUMN ALIS. Lt. Autumnal Club rush. 



Culm compressed ; ancipital ; umbel compound ; 

 spikes lanceolate, somewhat four sided. 



Grows in bunches from five to ten inches high. Leaves flat. 

 Involucre two leaved. Spikes crowded, a few together at the 

 ends of the umbel. Muddy grounds. August, October. 



20. ERIOPHORUM. 

 ERIOPHORUM ALPINUM. L. Jttpine Cotton grass. 



Culm triangular, naked ; leaves shorter than the 

 sheaths ; spike solitary, oblong ovate. 



A slender species, half a foot high with a single small spike, 

 to which is attached a thin tuft of white crisped hairs. When 

 young, it resembles Scirpus caespitosus. On the White moun- 

 tains, N. H. July. Perennial. 



ERIOPHORUM ANGUSTIFOLIUM. Willd. Narrow leaved Cot- 

 ton grass. 



Culm somewhat triangular, leaves linear, grooved; 

 spikes many, on smooth stalks. 



This species and the following are well known by their white 

 woolly spikes among the meadow grass in summer. This grass 

 has narrow channelled leaves, ending in a triangular point, and 

 simple peduncles. Wet grounds. June. Perennial. 



ERIOPHORUM POLYSTACHYON. L. Broad leaved Cotton grass. 

 Culms triangular, leaves broad-linear, flat ; spikes 

 many, on rough stalks, nodding. 



Leaves broader and more flat than in the foregoing; and the 

 wool shorter. Spikes on long drooping peduncles, which are 

 sometimes branched. Wet meadows. June. Perennial. 



