28 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Epigaea repens L. Heath family (Ericaceae). 



Gravel-plant; trailing arbutus; mayfiower. 



Small, shrubby, native plant, spreading on the ground in sandy soil, especially 

 under evergreen trees, from Florida to Michigan and northward. 



Part used. — Leaves (nonofBcial). 

 Epilohhunanguslifolmm L. Same as Chamaenerion angtiMifoUum. 

 Epilobium palustre L. Evening--primrose family ( Onagraceae). 



Swamp willow-herb; wickup. 



Slender, erect, native herb, 6 to 18 inches high, found in swamps and marshes 

 from Canada and the New England States west to Colorado and Washington. 



Parts used. — Leaves and root (nonofficial). 

 Epipltcgns vlrginuma Bart. Same as Leptamniuvi virfjinUtnuin. 

 Equisetum^ hyemale L. Horsetail family (Equisetaceae). 



Common scouring-rush ; honsetail; shave-grass. 



Rush-like perennial plant, growing in wet places along river banks and borders 

 of woods throughout nearly the whole of North America. 



Part used. — Plant (nonofficial). 

 Erechtites hieracifolia (L.) Raf. Aster family (Asteraceae). 



Fireweed; pile wort. 



Native, annual herb, 1 to 8 feet high, in woods, fields, and waste places, Canada 

 to Florida, Louisiana, and Nebraska. 



Part used. — Herb (nonofficial). 

 Erigeron canadensis L. Aster family (Asteraceae). 



Synonym. — Leptilon eanadense (L. ) Britton.« 



Canada fleabane; horseweed; colt's-tail; prideweed; bitterweed. 



Native, annual weed, 3 inches to 10 feet in height; in fields and meadows, along 

 roadsides, and in waste places, almost throughout North America. 



Part used.— Herh (nonofficial); the oil of erigeron, distilled from the fresh, 

 flowering herb, is official. 



Erigeron philadelphicus L. Aster family (Asteraceae). 



Philadelphia fleabane; sweet scabious; daisy-fleabane. 



Native, perennial herb, 1 to 3 feet high, infields and woods througliout NOrtli 

 America, exgept extreme North. 



Part used. — Herb (nonofiicial). 

 Eriodictyon. See Eriodictyon californicum. 



Eriodictyon californicum (H. & A.) Greene. Waterleaf family 



( Hy drophyllaceae ) . 

 Synonym. — Eriodictyon glutinosum Benth. 



Eriodictyon; yerba santa; mountain-balm; consumptive's- weed; bear's- weed. 

 Shrubby plant, 2 to 4 feet high, native; grows in clumps in dry situations and 



among rocks throughout California and northern Mexico. 

 Part used. — Leaves (official). 

 Eriodictyon glutinosum Benth. Same as Eriodictyon californicum. 

 Eryngium ynccaefolium Michx. Same as Eryngium yuccifolium. 



Eryngium yuccifolium Michx. Parsley family ( Apiaceae). 



Synonym. — Eryngium ynccaefolium Michx. 

 Water-eryngo; l)ntton-snakeroot; rattlesnake-weed; rattlesnake-master; corn- 



snakeroot. 

 Native, perennial herb, 1 to 5 feet high, growing in swamps and low wet ground 

 . from the pine barrens of New Jersey west to Minnesota, and south to Texas 

 and Florida. 

 Part used. — Rhizome (nonofficial). 



a Some authors hold that this plant belongs to the genus Leptilon and that its name should be 

 Leptilon eanadense (L.) Britten. The Pharmacopceia is here followed. 



