334 



CYPERACEAE. 



VOL. I. 



21. Scirpus Fernaldi Bickwell. Fernald's 



Bulrush. Fig. 821. 

 5". Fernaldi Bicknell, Torreya i : 96. 1901. 



Perennial; culms rather pale green, slender, sharply 

 3-angled, 2i tall or less. Leaves i"-3" wide, the 

 upper equalling or surpassing the inflorescence, those 

 of the involucre 3 or 4, the longest one 5' long or 

 less ; spikelets ovoid, 5"-8" long, sessile in a termi- 

 nal cluster and solitary at the ends of the slender 

 umbel-rays; scales finely puberulent, acuminate, en- 

 tire or lacerate, the recurved awn i4"-6" long; bris- 

 tles as long as the achene or shorter; style 3-cleft; 

 achene obovoid-cuneate, about li" long and thick, 

 trigonous, with rounded angles, yellow-brown and 

 shining. 



Shore of Somes Sound, Mt. Desert, Maine. July-Aug. 



22. Scirpus novae-angliae Britton. New 

 England Bulrush. Fig. 822. 



5". novae-angliae Britton, in Britton and Brown, 111. 

 Fl. Ed. i, 3: 509. 1898. 



Perennial by rootstocks ; culm stout, erect, 4-7 

 tall, sharply 3-angled, the sides flat or nearly so. 

 Leaves long, 4"-6" wide, somewhat roughish on 

 the margins when dry, the lowest reduced to 

 pointed sheaths, those of the involucre 2-5, the 

 longer of them much exceeding the inflorescence ; 

 spikelets narrowly cylindric, acute, l'-2' long, less 

 than i' thick, solitary or 2-5 together at the ends 

 of the rays of the umbel, the rays i'-4' long; 

 scales awned ; bristles 2-4, shorter than the gray- 

 ish-white dull obovate achene, which is distinctly 

 3-angled ; stamens 3 ; style 3-cleft. 



In fresh water and brackish marshes, Massachu- 

 setts to New York. 



23. Scirpus sylvaticus L. Wood Bulrush or Clubrush. Fig. 823. 



Scirpus sylvaticus L. Sp. PI. 51. 1753. 



Perennial by long rootstocks; culm triangular, stout, 

 smooth, 4-6 tall, often overtopped by the upper 

 leaves. Leaves flat, 5" -8" wide, rough on the margins, 

 more or less rugulose, the midvein prominent, those 

 of the involucre 5-8, the larger similar to those of the 

 culm, often i long or more; umbel terminal, very 

 large, sometimes 8' broad, about 3 times compound, the 

 spikelets ovoid or ovoid-oblong, mostly acute, ii"-2$" 

 long, borne in capitate clusters of 2-8 at the ends of 

 the raylets; bractlets of the involucels small, scarious, 

 linear or lanceolate; scales ovate-oblong, obtuse, brown 

 with a green centre ; bristles 6, downwardly barbed, 

 slightly exceeding the achene ; stamens 3 ; style 3-cleft ; 

 achene oblong, 3-angled, obtuse, nearly white, mucron- 

 ulate, not shining. 



In swamps, Maine to Georgia and Michigan. Also in 

 Europe and Asia. June-Aug. 



