54 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



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Poke weed. See Phytolacca decandra. 



Polar-plant. See Silphium laciniatum. 



Polecat-weed. See Spathyema foetida. 



Polemonium reptans L. Phlox family (Poiemoniaceae). 



American Greek valerian; abscess-root; sweetroot; Jacobs-ladder. 



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Native, perennial herb, 12 to 20 inches high, growing in woods and damp ground 

 from New York to Minnesota, south to Georgia and Missouri. 



Part used. — Root (nonofficial). 



Poly gala nuttallii T. & (1. Milkwort family (Polygalaceae). 



Nuttall's-milkwort; ground-centaury. 



Slender, erect, annual herb, 6 to 12 inches high, native in dry, sandy soil from 

 Massachusetts to North Carolina, west to Alabama and Missouri. 



/'art used. — Herb (nonofficial). 



Poly gala senega L. Milkwort family (Polygalaceae). 



Senega; Seneca snakeroot. 



Native, perennial herb, 8 to 12 inches high, found in rocky woods and on hillsides 

 from New Brunswick and western New England to Minnesota, south to North 

 Carolina and Missouri. 



Part used. — Root (official). 



Polygonatum biflorum (Walt.) Ell. Lily-of-the-valley family 



( Convallariaceae ) . 



Synonyms. — ConraUaria biflora Walt.; Salomonia biflora (Walt.) Britton. 



Hairy Solomon' s-seal; smaller Solomon Vseal. 



Native, perennial herb, 8 inches to 3 feet high, found in woods and thickets 

 from Canada south to Florida and Michigan. 



Part used. — Rhizome (nonofficial). 



Polygonatum commutatum ( Roem. & Schult. ) Dietr. Lily-of-the-valley family 



(Convallariaceae). 



Synonyms. — Poh/gonatum giganteitm Dietr.; Salomonia commvtata (Roem. & 

 ' Schult.) Britton. 



Giant Solomon' s-seal; great Solomon's-seal; smooth Solomon' s-seal. 



Native, perennial herb, 1 to 8 feet high, occurring in moist woods and along 

 streams from Canada to Georgia, west to Louisiana and Utah. 



Part used. — Rhizome (nonofficial). 

 PolygcmatumgigarUeum Dietr. Same as Polygonatum commutatum. 



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Polygonum hydropiper L. Buckwheat family (Polygonaceae). 



Smart weed; water-pepper; biting knot weed; pepper-plant. 



Smooth, annual plant, 8 inches to 2 feet high, naturalized from Europe; common 

 in moist waste places almost throughout North America. 



Part used. — Herb (nonofficial). . 



Polygonum punctatum Ell. Buckwheat family ( Polygonaceae ). 



Dotted smart weed; water-smart weed. 



Native, annual or perennial herb, found in swamps and other wet places through- 

 out most of North America. 



Part used. — Herb (nonofficial). 



Polymnia uvedalia L. Aster family ( Asteraceae ) . 



Yellow bear's-foot; yellow leaf cup; uvedalia. 



Large, native, perennial plant, 3 to 6 feet high; in ravines and eden* of woods 

 from New York to Michigan, south to Florida and Tex 



Part used. — Root (nonofficial). 



Polypod 



'ens 



Dryopt 



