440 



CYPERACEAE. 



VOL. I. 



239. Carex louisianica Bailey. Louisiana Sedge. Fig. 1 106. 



Carex Halei Carey; Chapm. Fl. S. States 543. 1860. Not 



Dewey, 1846. 



C. louisianica Bailey, Bull. Torr. Club 20: 428. 1893. 

 C. Eggertii Bailey, Bot. Gaz. ai : 6. 1896. 



Culms slender, erect, smooth or very nearly so, l-2 

 tall, arising singly from elongated rootstocks. Leaves 

 i"-2i" wide, roughish, the upper overtopping the 

 spikes ; bracts similar to the upper leaves, rough, 

 strongly sheathing; staminate spike solitary, long- 

 stalked; pistillate spikes 1-4, oblong, about i' long, 8"- 

 12" thick, erect, the lower slender-stalked, the upper 

 nearly sessile ; perigynia ovoid, much inflated, smooth, 

 strongly several-ribbed, shining when mature, 5"-6" 

 long, about 2*" in diameter at the rounded base, con- 

 tracted into the long 2-toothed beak, the small teeth 

 slightly spreading; scales oblong-lanceolate, acute or 

 acuminate, about one-half as long as the perigynia ; 

 stigmas 3. 



Swamps, near Washington, south to Florida and Texas, 

 north in Mississippi Valley to Missouri. June-Sept. 



240. Carex lupulina Muhl. Hop Sedge. Fig. 1107. 



Carex lupulina Muhl.; Willd. Sp. PI. 4: 266. 1805. 

 Carex lupulina var. pedunciilata Dewey, in Wood, Bot. & 



Flor. 376. 1870. 

 Carex lupulina Bella-villa Bailey, Mem. Torr. Club i: 12. 



1889. 

 C. Bella-villa Dewey, Am. Journ. Sci. (II.) 41: 229. 1866. 



Glabrous, culms stout, erect, i-4 tall. Leaves elon- 

 gated, nodulose, 2$"-8" wide, the upper ones and the 

 similar bracts much overtopping the culm ; staminate 

 spike solitary, rarely several, nearly sessile or slender- 

 peduncled, rather stout; pistillate spikes 2-5, densely 

 many-flowered, sessile to long-stalked, oblong, i'~3' long, 

 often i' or more in diameter; perigynia ascending; much 

 inflated, many-nerved, 5"-io" long, 2"-$" in diameter 

 just above the base, contracted into a subulate 2-toothed 

 beak; achene longer than thick, thickened but not 

 knobbed on angles ; scales lanceolate, acuminate or 

 aristate, generally much shorter than perigynia ; stig- 

 mas 3. 



In swamps and ditches, New Brunswick to Hudson Bay, 

 western Ontario, Iowa, Florida and Texas. June-Sept. 



241. Carex lupuliformis Sartwell. Hop-like Sedge. Fig. 1108. 



Carex lupulina var. fiolystachya Schw. & Torr. Ann. Lye. 



*' 337- 1825. Not C. polystachya Sw. 

 Carex lupuliformis Sartw. ; Dewey, Am. Journ. Sci. (II.) 



9: 29. 1850. 



Glabrous, culm stout, erect, ri-3 tall. Leaves 

 and bracts similar to those of the preceding species, 

 much elongated ; staminate spike solitary, stalked or 

 nearly sessile, sometimes 4' long; pistillate spikes 

 3-6, stalked or the upper nearly sessile, densely many- 

 flowered, oblong-cylindric, 13-3$' long, io"-is" in 

 diameter, often staminate at the top ; perigynia 

 yellowish brown at maturity, at first appressed, later 

 ascending, sessile, much inflated, several-nerved, 5"- 

 10" long, 2$"-3$" in diameter above the base, con- 

 tracted into a subulate 2-toothed beak; achene often 

 thicker than long, its angles strongly knobbed ; scales 

 lanceolate, awned, generally shorter than the peri- 

 gynia. 



Swamps, Vermont to Minnesota, south to Delaware 

 and Louisiana. June-Sept. 



