POLYGONACEAE 117 



14. Polygonum hydropiperoides Michx. AIii.d WaTER PEppER. 

 (Man. p. 362 ; I. F. f. 1332.) In swamps or wet soil, N. B. to Calif., Fla. 

 and Mex. — Pennsylvania: Northampton; Dauphin; Franki^in ; 

 Bucks ; Chester ; Lancaster ; Pike ; Dei^aware ; Allegheny. 



15. Polygonum punctatum EU. Dotted or Water Smart weed. 

 (Man. p. 362 ; I. P\ /. 1334. ) In swamps and wet places, throughout N. 

 Am. except the extreme north. — Pennsylvania : Northampton ; Lan- 

 caster ; Franklin ; Erie ; Allegheny. 



16. Polygonum Caieyi 01 ney. Carey's Persicaria. (Man. p. 362; 

 I. F. f. 1329.) In marshes, Mich, to R. I., N. J. and Pa. — Pennsyl- 

 vania : Monroe, Pocono Summit ; Carbon. 



17. Polygonum Hydropiper L- Smart-weed. Water Pepper. 

 (Man. p. 362 ; I. F. f. J333-) In moist waste places, almost throughout 

 N. Am. Nat. from Eu. — Peftnsylvania : Northampton ; Bucks ; CHES- 

 TER ; Lancaster ; Monroe ; Franklin ; Delaware ; Allegheny. 



18. Polygonum orientale L. Prince's Feather. (Man. p. 363; I. 

 F. /. 1335.) In waste places, generally escaped in eastern N. Am. Nat. 

 of Indi'vd. —Pefinsylvania : Northampton ; Lancaster ; Bucks ; Frank- 

 lin ; Chester; Dauphin; Delaware; Allegheny. 



19. Polygonum sagittatum L. A rrow- leaved Tear-Thumb. (Man. 

 p. 365 ; I. F./. 1354.) In wet soil, Newf. to the N. W. Terr., Fla. and Kans. 

 —Pennsylvania : Northampton ; Bucks ; Erie ; Franklin ; Chester ; 

 Lancaster ; York ; Monroe ; Delaware ; Allegheny. 



20. Polygonum arifolium L. H alberd-leaved Tear-Thumb. ( Man. 

 p. 366 ; I. F. /. f355) In moist or wet soil, N. B. to Minn., 8. C. — 

 Pennsylvania : Northampton ; Franklin ; Huntingdon ; Bucks ; 

 Chester; Lancaster; Delaware, Tinicum ; "Allegheny. 



21. Polygonum Zuccarinii Small. Japanese Knotweed. (Man. p. 

 366 ; I. F.y. 1353.) Escaped from cultivation. Pa., N. Y., N. J. and Mo. 

 'S&t. oi }aY'a-a.— Pennsylvania: Philadelphia; Bucks. 



22. Polygonum Convolvulus L. Black Bindweed. (Man. p. 365; 

 I. F. y". 1348.) In waste or cult, grounds, nearly throughout N. Am. 

 except the extreme north. Nat. from Eu. Native of Asia. Pennsyl- 

 vania: Northampton; Bucks; Franklin; Lancaster; Monroe ; 

 Chester; Delaware; Allegheny. 



23. Polygonum cilinode Michx. Fringed Black Bindweed. 

 (Man. p. 365; I. F./. 1349.) In rocky places N. S. to Minn, and Pa., 

 south in the AUeghanies to N. C. — Pennsylvafiia : Monroe; North- 

 ampton ; Perry ; Lackawanna ; Tioga ; Allegheny. 



24. Polygonum scandens L. Climbing False Buckwheat. (Man. 

 p. 365; I. F. /. 1350.) In woods and thickets, N. S. to Out. and the 

 Rocky Mountains, Fla. and T&yi.— Pennsylvania : Northampton ; 

 Bucks; Erie; Franklin; Lancaster; Perry; Lackawanna; 

 Chester ; Delaware ; Allegheny. 



25. Polygonum cristatum Engelm. & Gray. CRESTED False Buck- 

 wheat. (Man. p. 366 ; I. F./. J352.) Sandy woods and rocky bauks, 



