280 



CYPERACEAE. 



ii. Rynchospora cymosa Ell. Grass-like Beaked-rush. (Fig. 658.) 



Rh vnchospora cymosa Ell. Bot. S. C. & Ga. i: 58. 1816. 

 Schoenus cymosus Muhl. Gram. 8. 1817. 



Light green, culms tufted, sharply 3-angled, 

 smooth, i-2 tall. Leaves flat, narrowly linear, 

 grass-like, i^ // -2 // ' wide or the basal ones broader, 

 the uppermost sometimes overtopping the culm; 

 spikelets ovoid-oblong, acute, i%" long, sessile or 

 nearly so, capitate in a's-y's on the ultimate 

 branches of the axillary and terminal clusters; 

 bracts setaceous; scales dark brown, broadly ovate 

 or suborbicular; bristles 6, upwardly barbed, 

 shorter than the achene; achene broadly obovate 

 or oblong, lenticular, transversely wrinkled; style 

 2-cleft; tubercle conic, one-fourth to one-third as 

 long as the achene. 



In moist soil, New Jersey to Kentucky and Missouri, 

 south to Florida and Texas. Also in Cuba. June-Aug. 



12. Rynchospora Torreyana A. 



Gray. Torrey's Beaked-rush. 



(Fig. 659.) 



Rhynchospora Torreyana A. Gray, Ann. Lye. 

 N. Y. 3: 197. 1835. 



Culms terete or obscurely 3-angled, smooth, 

 slender, iX-3 tall. Leaves involute, the 

 lower i^ // -2 // wide at the base and elong- 

 ated, the upper bristle-like, distant; spike- 

 lets ovoid, iX" l n g) peduncled, numerous, 

 in 1-4 loose distant clusters; scales brow.n, 

 ovate, mucronate; bristles 6, upwardly 

 barbed, shorter than the oblong-obovate 

 transversely wrinkled lenticular achene; 

 style 2-cleft; tubercle flat, conic, one-fourth 

 to one-third as long as the achene. 



In wet pine barrens, New Jersey to South 

 Carolina. July-Aug. 



13. Rynchospora inexpansa 



(Michx.) Vahl. Nodding Beaked- 

 rush. (Fig. 660.) 



Sclioenus inexpansus Michx. Fl. Bor. Am. i ;-. 



1803. 

 Rhynchospora ine.vpansa Vahl, Enum. 2: 232. 



1806. 



Rootstocks slender, culms tufted, smooth, 

 slender, 3-angled, 2-3 tall. Leaves smooth. 

 \" wide or less, flat, the lower elongated, 

 the upper bristle-like, remote; spikelets 

 spindle-shaped, acute at both ends, about 3" 

 long, numerous, in 1-4 narrow finally droop- 

 ing panicles; scales brown, lanceolate, acumi- 

 nate; bristles 6, upwardly hispid, very slen- 

 der, about twice as long as the achene; 

 achene narrowly oblong, transversely wrin- 

 kled; style 2 cleft; tubercle flat, triapgular- 

 subulate, one-half as long as the achene. 



Moist soil, Virginia to Louisiana. June-Aug. 



