SEDGES. 399 



Carolinian and Louisianian areas. Shores of Delaware, Maryland to Florida, west 

 to Texas. 



ALABAMA : Coast Pine belt. Margin of springs and brooks. Mobile County, Spring- 

 hill. June to August ; rare. Perennial. 



Type locality: "Von Bosc aus Nord- America." 



Herb. Geol. Surv. Herb. Mohr. 



Eleocharis tuberculosa (Michx.) Room. & Schult. Syst. Veg. 2 : 152. 1817. 



LARGE-TUBERCLED SPIKE-RUSH. 



Scirpua tuberculosa Michx. Fl. Bor. Am. 1 : 30. 1803. 



Ell. Sk. 1 : 78. Gray, Man. ed. 6, 574. Chap. Fl. 515. Coulter, Contr. Nat. Herb. 

 2 : 468. 



Carolinian to Louisiaiiiaii area. Southern Massachusetts to New Jersey, along the 

 coast to Florida, west to Texas and Arkansas. 



ALABAMA : Central Pine belt to Littoral region, wet miry places. Autauga County, 

 Prattville. Washington County, Yellowpine. Mobile and Baldwin counties; com- 

 mon. July to September. Perennial. 



Type locality : " Hab. in Carolina inferiore." 



Herb. Geol. Surv. Herb. Mohr. 



Eleocharis vivipara Link, Hort. Berol. 1 : 283. 1827. SPROUTING SPIKE-RUSH. 



Eleocharis prolif era Torr. Ann. Lye. N. Y. 3 : 442. 1836. Not Torr. 1. c. 316. 



Kunth, Enum. 2 : 146, Chap. Fl. 516, in part. 



Carolinian and Louisianiaii areas. South Carolina and Florida. 



ALABAMA: Metamorphic hills. Coast plain, miry margin of ditches and pools. Lee 

 County, Auburn (Baker $ Earle, 564. ) Mobile, Dauphinway, June, July ; frequent. 

 Perennial. 



Easily confounded with E. camptotricha, with which it is not rarely associated; 

 readily distinguished by the more oblong-obovate, pale, less strongly costate, smooth- 

 ish nut, and the short loose sheaths, lacerate at the top. 



Type locality not ascertained; Kunth's locality : " Carolina ad margines paluduni." 



Herb. Geol. Surv. Herb. Mohr. 



Eleocharis camptotricha Sauv. Fl. Cub. 173. 1868. HAIRLIKE SPIKE-RUSH. 



Eleocharis prolif era Torr. Ann. Lye. N. Y. 316. 1836. ( ?) 



Rhizoma descendent, fibrous; sterns numerous, filiform, striate, subtriangular, 

 sulcate; sheaths hyaline with the opening oblique, the head compressed, few- 

 flowered ; scales about triseriate, ovate, obtuse, brown-hyaline on the sides, with a 

 green keel; stamens 2 or 3; acheniuni milky- white, roundish-oblong, triangular, the 

 angles strongly pitted; tubercle short-conical; style trifid, long; bristles 5 or 6, 

 retrorsely scabrous, unequal, double the length of the acheuium. Easily distin- 

 guished from its allies by the white pitted and striated achenium. 



CUBA. 



Louisianian area. North Carolina, South Carolina, Georgia, Florida, west to 

 Louisiana. 



ALABAMA: Coast plain, border ditches, ponds, exsiccated places. Mobile County. 

 June, July ; not frequent. Perennial. 



In dense tufts; spikes rarely proliferous. 



Type locality : "On the borders of lagoons. Pinar del Rio." 



Herb. Geol. Surv. Herb. Mohr. 



Eleocharis microcarpa Torr. Ann. Lye. N. Y. 3 : 312. 1836. 



SMALL-FRUITED SPIKE-RUSH. 



Chap. Fl. 517. Coulter, Contr. Nat. Herb. 2 : 468. 



Carolinian and Louisianian areas. Maryland, southern New Jersey to Florida, 

 west to Texas. 



ALABAMA: Central Prairie region to Coast plain. 



Shallow ponds and ditches. Montgomery County (G. McCarthy). Wilcox County 

 (Buckley). Mobile and Baldwin counties. July ; not infrequent. Perennial. 



Type locality : " Wet places. New Orleans. Dr. In galls." 



Herb. Geol. Surv. Herb. Mohr. 



Eleocharis teiiuis (Willd.) Schult. Mant. 2 :89. 1824. SLENDER SPIKE-RUSH. 



Scirpm tennis Willd. Enum. 1 : 76. 1809. 



Gray, Man. ed. 6, 575. Chap. Fl. 517. Coulter, Contr. Nat. Herb. 2 : 468. 



Canadian zone to Carolinian area. Nova Scotia, Quebec, and Lake Superior to the 

 Rocky Mountains; New England west to Michigan and Minnesota; throughout the 

 Middle States to Missouri, Arkansas, and Texas. 



