28 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Epigaea repens L. Heath family (Ericaceae). 



Gravel-plant; trailing arbutus; mayflower. 

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



under evergreen trees, from Florida to Michigan and northward. 

 Part used. — Leaves (nonofficial) . 

 Epilobium angustifolium L. Same as Chamaenerion angustifolium. 

 Epilobium palustre L. Evening-primrose family i 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 (nonomcial). 

 Epiphegus virginiana Bart. Same as Leptamnium virgin ianinn. 



Equisetum hyemale L. Horsetail family (Equisetaceae). 



Common scouring-rush; horsetail; shave-grass. 

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



of woods throughout nearly the whole of North America. 

 Part used. — Plant (nonomcial). 

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



Fire weed; 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 (nonomcial). 

 Erigeron canadensis L. Aster family (Asteraceae). 



Synonym. — Leptilon canadense (L. ) Britton.^ 

 Canada fleabane; horseweed; colt's-tail; prideweed; bitter weed. 

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



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

 Part used. — Herb (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 throughout North 

 America, except extreme North. 



Part used. — Herb ( nonofficial ) . 

 Eriodictyon. See Eriodictyon calif ornicum. 



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



(Hydrophyllaceae ) . 

 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 yuccaefolium Michx. / Same as Eryngium yuccifolium. 



Eryngium yuccifolium Michx. Parsley family (Apiaceae). 



Synonym. — Eryngium yuccaefolium Michx. 

 Water-eryngo; button-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 canadense (L.) Britton. The Pharmacopoeia is here followed. 



