BUCKWHEAT FAMILY. 483 



Alabama: Adventive. Coast plain. Fully naturalized. Roadsides, ditches, bor- 

 ders of swamps about ^lobile. May. Becoming a common wayside weed. Peren- 

 nial. 



Type locality: "Hab. in Gallia, Italia, Veronae." 



Herb. Ceol. Surv. Herb. Mobr. 



Runiex conglonieratus Murr. Prodr. Fl. Goett. 52. 1770. 

 Fugitive from Europe with ballast. 

 Alab.\ma: Mobile, ballast heaps, October, 1893; rare. 

 Typo locality not ascertained. 

 Herb. Geol. Surv. Herb. Mohr. 



Rumex cuneifolius Cauipdera, Monogr. Rumex, 66, 95. 1819. Wedge-leaf Dock. 



Spreng. Syst. Veg. 2 : 159. 



Perennial. Stem 12 to 18 inches long, assnrgent, simple or branched from the 

 base, roughish; leaves thickish, oblong-ovate, obtuse, cuneate at the base, crenately 

 denticulate; flowering branches nearly leafless: flowers almost sessile, in dense 

 whorls; valves, scarcely' over 1 line long, crenulate, with 3 callosities. 



Argentina, Montevideo, Chile, Sottii Africa. 



Louisianian area. Adventive in ballast from Buenos Ayres, and firmly established 

 in western Florida (Pensacola). 



Alabama: Dry sandy places. Mobile County, near and on ballast heaps. Flowers 

 in June; fruit ripe in August. 



First observed in 1891. Spreading along the river banks. 1895. 



Type locality: "Hab. in Buenos Ayres." 



Herb. Geol. Surv. Herb. Mohr. 



Rumex obtusifolius L. Sp. PL 1 : 335. 1753. Bitter Dock. 



Gray. Man. ed. 6, 438. Chap. Fl. 385. Coulter, Contr. Nat. Herb. 2 : 381. 



Alleghenian to Louisianian area. Introduced from Europe. Naturalized over the 

 North American continent. 



Alabama: All over the State, in cultivated and waste grounds; a coarse and 

 troublesome weed. May. 



Economic uses : The root is used indiscriminately with the yellow dock for medicine. 



Type locality : '"Hab. in Germania, Helvetia, Gallia, Anglia." 



Herb. Geol. Surv. Herb. Mohr. 



Rumex obtusifolius X crispus. This hybrid has been collected in St. Clair 

 County, near Ashville. Sei>tember. On roadsides. 



POLYGONUM L. Sp. PL 1: 359. 1753.' 



About 150 species, cosmopolitan, mostly northern. North America and Mexico, 

 about 50 species. Atlantic North America, 21. Ours all herbs. 



Polygonum aviculare L. Sp. PI. 1 : 362. 1753. Wayside Knotweed. 



Ell. Sk. 1:453. Gray, Man. ed. 6, 439. Chap. FL 390. 



Cosmopolitan in the temperate regions. Europe, Asia, North Africa, Mexico, South 

 America. 



Boreal zones to Louisianian area. Over the North American continent; most fre- 

 quent east of the Rocky Mountains. 



Alabama: Over the State. Roadsides, waste places, everywhere in the interior. 

 May to October. Rare near the coast. Annual. 



Type locality: "Hab. in Europae cultis ruderatis." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum erectum L. Sp. PL 1 : 363. 1753. Erect Door Weed. 



Poh/ffonitm aricnlure vav. erectum Roth, Tent. Fl. Germ. 1:174. 1788. Grav, Man. 

 ed. 6,440. Chap. Fl. 390. Coulter, Contr. Nat. Herb. 2 : 375. Wats. Bot. Calif. 2 : 11. 



Europe. 



Alleghenian to Louisianian area. Ontario; New England south to New .Jersey and 

 Georgia. 



Alabama: Central Pine belt and Central Prairie region. In yards, waste places. 

 Tuscaloosa County (.E. -L -Smi</i). Dallas Countv,Uniontown. Montgomery County. 

 June; not common. Annual. 



Type locality : "Hab. in Philadelphia, enata ex seminibus D. Kalmii." 



Herb. Geol. Surv. Herb. Mohr. 



'.John K. Small, A preliminarv list of American species of Polvgonum, Bull. Torr. 

 Club, 19:35L 1892. 



