486 PLANT LIFE OF ALABAMA. 



Polygonum virgiuianum L. Sp. PI. 1 :360. 1753. VIRGINIA KNOTWKED. 



Ell. Sk. 1 : 454. Gray, M an. ed. 6, 442. Chap. Fl. 390. 



Alleghenian to Louisianian area. Ontario, southern New England, west to 

 Nebraska, south to Florida, Louisiana, Arkansas, and Missouri. 



ALABAMA : From the Tennessee Valley to the Coast plain. Damp woods and copses. 

 Bottoms. Lauderdale County. Franklin County, Rnssellville. Cullman and Tal- 

 ladega counties. Chilton County (E. A. Smith). Montgomery, Clarke, Escambia, and 

 Mobile counties. Flowers green. July to September; frequent. Perennial. 



Type locality : " Hab. in Virginia." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum sagittatum L. Sp. PL 1 : 363. 1753. ARROW-LEAA^ED TEAK-THUMB. 



Ell. Sk. 1:458. Gray, Man. ed. 6, 442. Chap. FL 390. Coulter, Coutr. Nat. Herb. 

 2 : 378. 



ASIA, SIBERIA. 



Canadian zone to Louisianian area. Newfoundland, Illinois, Ontario, New Eng- 

 land, west to Dakota, Nebraska, Ohio Valley, Missouri, and Kansas, south to Florida 

 and Texas. 



ALABAMA: Mountain region to Central Prairie belt. Low damp thickets. Clay 

 County. Autauga County, Prattville (E. A. Smith). Dallas County, Uniontowu. 

 Lee County. Auburn. Annual. 



Type locality : " Hab. in Virginiae, Marilandiae madidis." 

 Herb. 



Geol. Surv. Herb. Mohr. 

 Polygonum convolvulus L. Sp. PL 1 : 364. 1753. BLACK BIND WEED. 



Ell. Sk. 1 : 459. Gray, Man. ed. 6, 442. Chap. FL 390. Coulter, Coutr. Nat. Herb. 

 2:378. 



EUROPE, MEXICO. 



Alleghenian to Louisianian area. Ontario, west to the Pacific, most probably 

 introduced; New England, throughout the Eastern States to the Gulf, Texas, and 

 Mexico. 



ALABAMA: Coast plain. Waste places. Mobile County on ballast. June to 

 August; frequent. Annual. 



Type locality : " Hab. in Europae agris." 



Herb. Geol. Surv. Herb. Mohr. 



Polygonum cristatum Engelrn. & Gr. Bost. Journ. Nat. Hist. 5 : 259. 1847. 



CLIMBING FALSE BUCKWHEAT. 



Coulter, Contr. Nat. Herb. 2 : 378. 



Carolinian and Louisianian areas. Southern Georgia, Indian Territory, and Texas. 



ALABAMA: Over the State. In thickets and cultivated ground, climbing over 

 bushes. Cullman, Bibb, Montgomery, and Mobile counties. A pernicious bindweed. 



The specimens from Alabama so far observed, referred to P. dumetorum and P. acan- 

 dens, belong to this species. 



Type locality : " Margins of woods, &c. near Industry [Texas]." 



Herb. Geol. Surv. Herb. Mohr. 



THYSANELL A Gray, Bost. Journ. Nat, Hist. 5 : 24. 1845. 

 One species. Southern Atlantic North America. 



Thysanella fimbriata (Ell.) Gray, Bost. Journ. Nat. Hist. 5 : 24. 1845. 



FRINGED THYSANELLA. 



Polygonumfimbriatum Ell. Sk. 1 : 583. 1817. 



Ell. i.e. Chap. FL 391. 



Louisianian area. Georgia, Florida. 



ALABAMA: Upper division Coast Pine belt. Arid sandy ridges. Geneva County 

 (E. A. Smith). Flowers white. September; rare. Annual. 



Type locality: "Grows on the poorest pine barrens, on the high ridges between the 

 Flint and Chattahoochie rivers, along what is termed the Federal road." 



Herb. Geol. Surv. Herb. Mohr. 



FOLYGONELL A Michx. Fl. Bor. Am. 2 : 240. 1803. 

 Seven species, herbs or shrubs. Southeastern North America, 6. 



Polygonella polygama (Vent.) Gray, Bost. Journ. Nat. Hist. 5 : 231. 1847. 



OCTOBER FLOWER. 



Polygonum poli/gamum Vent. Jard. Cels. 665. 1800. 

 Polygonella pdrvifolia Michx. FL Bor. Am. 2 : 241. 1803. 



