

SEDGE FAMILY. 

 5. Cyperus microdontus Torr. Coast Cyperus. (Fig. 547. 



Cyperus microdontus Torr. Ann. Lye. N. Y. 3: 255. 



1836. 



Annual, similar to the preceding species, culms 

 very slender, tufted, sometimes 20' high, usually 

 lower. Leaves about i x/ wide, those of the invo- 

 lucre much elongated; umbel commonly simple, 

 sessile, capitate, or i-6-rayed; spikelets linear, 

 acute, 3 // -9 // long, less than i" wide, yellowish- 

 brown; scales ovate, acute, thin, appressed when 

 young, spreading at maturity; stamens 2; style 2- 

 cleft, its branches much exserted; acheue lenticular, 

 linear-oblong, short-pointed, light brown, one-half 

 as long as the scale, its superficial cells quadrate. 



In wet soil, on or near the coast, Virginia in 

 Florida and Texas. Aug.-Oct. 



6. Cyperus flavicomus Michx. Elegant Cypeni*. !MK > i 



Cyperus flavicomus Mich* FI U<.r \ 1803. 



Annual, culms stout or sk-nder, i-3 tall, leafy 

 below. Leaves smooth, or rough-margined, t' 

 wide, those of the involucre 3-*, the longer one* 

 much exceeding the inflorescence; umbel* fr* 

 several-rayed, often compound; primary ray. 

 2 X I ^ / long; spikelcts numerous, usually tienttly clat- 

 tered, linear, acute, 4"-io" long, i"-itf" wide, 

 flat, many-flowered, spreading; scale* oblong, ob- 

 tuse, thin, dull, yellowish-brown, carious-mar- 

 gined, faintly ^-nerved; stamens 3; stjlc 2 -cleft. 

 little exserted; achenes obovatt . IcntiruUr, black. 

 mucronate, not shining, nearly as long as the 

 scales and often persistent on the racbis after these 

 have fallen away. 



In wet or moist sandy soil. Virginia to Florida and 



Louisiana. Aun 



7. Cyperus inflexus Muhl. Awned Cyperus. (Fig. 549.) 



Cyperus inflexus Muhl. Gram. 16. 1817. 



Cyperus aristatus Boeckl. Linnaea. 35: 500, in part. 1868. 

 Not Rottb. 1773. 



Annual, culms slender or almost filiform, tufted, i'- 

 6' tall, about equalled by the leaves. Leaves i" wide 

 or less, those of the involucre 2-3, exceeding the umbel; 

 umbel sessile, capitate, or i-3-rayed; spikelets linear- 

 oblong, 6-io-flowered, 2 // ~3 // long; scales light brown, 

 lanceolate, rather firm, strongly several-nerved, taper- 

 ing into a long, recurved awn, falling from the rachis 

 at maturity; stamen i; style 3-cleft; rachis narrowly 

 winged, the wings persistent; aehene 3-angled, brown, 

 dull, narrowly obovoid or oblong, obtuse, mucronulate. 



In wet, sandy soil, Vermont to the Northwest Territory 

 and Oregon, south to Florida, Texas, California a 

 Mexico. Fragrant in drying. July-Sept. 



