BUCKWHEAT FAMILY. 485 



Alabama : Coast plain. Shaded swamps. Mobile County, swampy alluvial for- 

 est on the old telegraph road, copious. Hale County, Greensboro. Flowers bright 

 pink. October. Annual. 



Type locality : West Indies. 



Herb. Geol. Snrv. Herb. Mohr. 



Polygonum persicaria L. Sp. PI. 1 : 361. 1753. Lady's Thumb. 



Gray, Man. ed. 6, 441. Chap. Fl. 389. Coulter, Contr. Nat. Herb. 2 :377. 



Introduced from Europe. Extensively naturalized all over the continent. 



Alabama : Over the State. Ditches, low places. Most frequent in the Central 

 Prairiebelt. Tuscaloosa County (jK. J. /Smit/*)- Dallas County, Uniontown. Mobile 

 County, ballast ground. Flowers greenish white. June to October; not common 

 Annual. 



Type locality: "Hab. in Europae cultis." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum setaceum Baldwin ; Ell. Sk. 1 : 455. 1817. Bristly Persicauia. 



Chap. Fl. 389. Coulter, Contr. Nat. Herb. 2 : 377. 



Louisiauiau area. Georgia to Texas and Arkansas. 



Alabama: Central Prairie belt. Ditches, borders of ponds. Montgomery County. 

 Lee County, Auburn {Baker 4'- Earle). Flowers white. October; rare. Annual. 



Type locality : " In clayey soils, Savannah ; St. Marys, Ga. Baldwin." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum hydropiperoides Michx. Fl. Bor. Am. 1 : 239. 1803. 



Mild Water Pepper. 



Polyqonum mite Pers. Syn. 1 : 440. 1805. 



Ell. Sk. 1:4.56. Grav, Man.ed.6, 441. Chap. Fl. 389. Coulter, Contr. Nat. Herb. 

 2 : 377. 



Alleghenian to Louisianian area. New Brunswick, Ontario ; New England, west 

 to Nebraska; south to Florida, Texas, Arkansas, and Missouri. 



Alabama : All over the State, border of swamps, shallow ponds, ditches. Most 

 abundant from the Central Pine belt to the coast. Montgomery, Escambia, and 

 Mobile counties. Flowers white. July to October; abundant. Perennial. 



Type locality: "Hab. in Pennsylvania, Virginia, Carolina." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum punctatum Ell. Sk. 1 : 455. 1817. Smart Weed. Water Pepper. 



/'oZ^g^oJu/m rtwe H. B. K. Nov. Gen. 2 : 179. 1817. Not Lam. 



Ell. Sk. 1. c. Gray. Man. ed. 6, 442. Chap. Fl. 389. Coulter, Contr. Nat. Herb. 2 : 377. 

 Griseb. Fl. Brit. W. Ind. 161. 



Alleghenian and Louisianian areas. Ontario; New England west to Dakota and 

 Nebraska, south to Florida and Texas. 



Alabama: Over the State. Wet places. Flowers white. July to October; com- 

 mon. Perennial. 



Type locality: "In ditches and shallow ponds [South Carolina and Georgia]." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum hydropiper L. Sp. PL 1 : 361. 1753. Water Pepper. 



Gray, Man. ed. 6, 441. Coulter, Contr. Nat. Herb. 2 : 377. 



Europe. 



Alleghenian and Louisianian areas. Throughout the continent. Mostly natural- 

 ized from Europe 



Alabama: Low wet places. Dallas County, Uniontown. June; rare. Perennial. 



Type locality: "Hab. in Europae subhumidis." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum opelousanum Riddell ; Small, Bull. Torr. Club, 19 : 354. 1892. 



Opelousas Persicaria. 



I'olyf/onum opelousanum Riddell, Cat. Fl. Lud. in N. Orl. Med. & Surg. .Jouru. 1852. 

 Name onlj% 



Britt. «fc Br. 111. Fl. 1 : 559. 



Mexico. 



Louisianian area. Louisiana and Texas. 



Alabama : Coast plain. Muddy border of ponds. Mobile County, foot of Spring- 

 hill. Flowers white. May, 1897; copious. Lee County, Auburn (F. -S. 7i'ar/e). Not 

 rare. Perennial. 



Type locality: "Louisiana: Low prairies near Opelousas (Carpenter, 26)." 



Herb. Geol. Surv. Herb. Mohr. 



