294 



CYPERACEAE. 



7. Carex Louisianica Bailey. Louisiana 

 Sedge. (Fig. 677.) 



Care.r Halei Carey; Chapm. Fl. S. States, 543. i86o_ 



Not Dewey, 1846. 

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



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

 tall. Leaves i^-a" wide, roughish, the upper over- 

 topping the spikes; bracts similar to the upper leaves, 

 rough; pistillate spikes 1-3, oblong, about i' long, 8"- 

 io // thick, erect, the lower slender-stalked, the upper 

 nearly sessile; staminate spike solitary, long-stalked; 

 perigynia ovoid, much inflated, smooth, strongly sev- 

 eral-nerved, shining when mature, $"-6" long, about 

 2j // in diameter at the rounded base, tapering gradu- 

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

 slightly spreading; scales oblong-lanceolate, acumi- 

 nate, about one-half as long as the perigynia; stigmas 3. 



Swamps, Missouri to Texas and Florida. Jtme-Aug. 



8. Carex lupulina Muhl. Hop Sedge. (Fig. 678.) 



Caie.i gigantea Rudge, Trans. Linn. Soc. 7: 99. pi. 10. 



f. z. 1804. ? 



Care.r lupulina Muhl. : Schk. Riedg. 2: 54. / 123. 1806. 

 Care.r lupulina var. pedunculata Dewey in Wood, 



Bot. & Flor. 376. 1870. 



Glabrous, culms stout, erect or reclining, i-4 

 tall. Leaves elongated, nodulose, 2> // -6 // wide, 

 the upper ones and the similar bracts much over- 

 topping the culm; staminate spike solitary or rarely 

 several, nearly sessile or slender-peduncled, rather 

 stout; pistillate spikes 2-5, densely many-flowered, 

 sessile or the lower slender-stalked, oblong, i^'- 

 2^' long, often i' in diameter; perigynia ascending 

 or spreading, often short-stalked, much inflated, 

 many-nerved, 6 // -9 // long, about lYz" in diameter 

 just above the base, tapering from much below the 

 middle into a subulate 2-toothed beak; achene longer 

 than thick; scales lanceolate, acuminate or aristate, 

 one-third as long as the perigynia; stigmas 3. 



In swamps and ditches, Hudson Bay to western 

 Ontario, Florida and Texas. June-Aug. 



Carex lupulina Bella-villa (Dewey) Bailej-, Mem. Torr. Club, i: 12. 1889. 

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



Culm slender; pistillate spikes remote, slender-stalked, sometimes staminate at the summit 

 the perigynia widely spreading at maturity, the staminate spike sometimes branched and with i 

 2 perigynia at its base. Eastern New York to southern Ontario. 



A hybrid with C. retrorsa is described by Professor Dudley (Caj-uga Fl. 119. 1886). 



9. Carex lupuliformis Sartwell. Hop-like 

 Sedge. (Fig. 679.) 



Carex lupulina var. polyslachya Schw. & Torr. Anr 



Lye. i: 337. 1825. Not C. polystachya Sw. 

 Care.r lupuliformis Sartw. ; Dewey, Am. Journ. Sci. (II. 



9: 29. 1850. 



Glabrous, culm stout, erect, i > -3 tall. Leaves ! 

 bracts similar to those of the preceding species, muc 

 elongated; staminate spike solitary, stalked or near! 

 sessile, sometimes 4' long; pistillate spikes 3-6, stalke 

 or the upper sessile, densely many-flowered, 2 / ~3 / long, 

 6"-io" in diameter, often staminate at the top; peri- 

 gynia yellowish, at first appressed, later ascending, \ 

 sile, much inflated, several-nerved, 5"-S" long, abot 

 2" in diameter above the base, tapering from below 1 

 middle to a subulate 2-toothed beak; achene as long! 

 thick, its angles mamillate; scales lanceolate, awnfed, 

 shorter than or equalling the perigynia. 



Sw.imps, Rhode Island to Del. and Minnesota. June-Ai 



