SEDGES. 399 



Caroliuian aucl Louislauian areas. Shores of Delaware, Maryland to Florida, west 

 to Texas. 



Alabama : Coast Pine belt. Margiu of sjjriugs and brooks. Mobile Comity, Sprinpr- 

 liill. Juue to August; rare. Perennial. 



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



Herb. Geol. Surv. Herb. Mohr. 



Eleocharis tuberculosa (Michx.) Roem. & Scliult. Syst. Veg. 2 : 152. 1817. 



Lahge-tubercled Spike-rush. 



Scirpus tuberciilosa Michx. Fl. Bor. Am. 1 : 30. 1803. 



Ell. Sk. 1 : 78. Grav, Man. ed. 6, 571. Chap. Fl. 515. Coulter, Contr. Nat. Herb. 

 2 : 468. 



Carolinian to Louisianian 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, Yellowpiue. 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 proUfera Torr. Ann. Lye. N. Y. 3 : 442. 1836. Not Torr. 1. c. 316. 



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



Carolinian and Louisianian areas. South Carolina and Florida. 



Alabama: Metamorphic hills. Coast plain, miry margin of ditches and jjools. Lee 

 County, Auburn {Baker l^ Earle, ^Q^,) Mobile, Dauphinway, Juue, .Tuly ; frequent. 

 Perennial. 



Easily confounded with E. campiotriclM,vf ith. which it is not rarely associated; 

 readilydistinguishedby themore 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 j^aludum." 



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 ; stems 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 2or3; achenium 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 achenium. Easily distin- 

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



Cuba. 



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

 Louisiana. 



Alabama: Coast plain, boi-der ditches, ponds, exsiccated places. Mobile County. 

 June, July; not frequent. Perennial. 



In dense tufts; spikes rarely proliferous. 



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



Herb. Geol. Surv. Herb. Mohr. 



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



Small-fkuited Spike-rush. 



Chap. Fl. 517. Coulter, Coutr. 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 (Tr. ilfcC«rWt//). Wilcox County 

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



Type locality : "Wet places. New Orleans. Dr. Ingalls." 



Herb, Geol. Surv. Herb. Mohr. 



Eleocharis tenuis (Willd.) Schult. Mant. 2 :89. 1824. Slender Spikp:-ru.sh. 



Scirpus tenuis Willd. Enum. 1 : 76. 1809. 



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



Canadian zone to Caroliuian area. N'ova Scotia, Quebec, and Lake Sujjcrior to the 

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

 Middle States to Missouri, Arkansas, and Texas, 



