30 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Euphorbia pilulifera L. Spurge family (Euphorbiaceae). 



Pill-bearing spurge; snakeweed; Queensland asthma-weed. 



Herbaceous annual, 10 to 15 inches high, occurring from the Gulf States through 

 Texas to New Mexico. 



Part used. — Herb (nonofficial). 

 Evening-primrose. See Oenothera biennis. 

 Everlasting. See Anaphalis margaritacea. 

 Everlasting, large-flowered. See Anaphalis margaritacea. 

 Everlasting, pearly. See Anaphalis margaritacea. 

 Eve's-cup. See Sarracenia flava. 



Fagara clava-herculis (L.) Small. Rue family (Rutaceae). 



Synoiiijrn. — Xanthoxylum clava-herculis L. 



Xanthoxylum; southern prickly ash; toothache-tree; yellowthorn; yellow- 

 wood; Hercules-club. 



Small, indigenous, very prickly tree, sometimes 45 feet in height, occurring 

 along streams from southern Virginia to Florida, west to Texas and Arkansas. 



Parts used. — Bark official under the name "Xanthoxylum"; berries (non- 

 official). 



Fagus americana Sweet. Beech family (Fagaceae). 



Synonym. — Fagus ferruginea Ait. 



American beech; beechnut-tree. 



Large, native forest tree, growing in rich soil from Nova Scotia to Florida, west 

 to Wisconsin and Texas. 



Parts used. — Bark and leaves (nonofficial). 

 Fagus ferruginea Ait. Same as Fagus americana. 

 Fairy-fingers. See Digitalis purpurea. 

 Featherfew. See Chrysanthemum parthenium. 

 Febrifuge-plant. See Chrysanthemum parthenium. 

 Female-fern. See Athyrium filix-foemina and Polypodium vulgare. 

 Fennel, dog-. See Anthemis cotula. 

 Fern, evergreen wood-. See Dryopteris marginalis. 

 Fern, female-. See Athyrium filix-foemina and Polypodium rulgare. 

 Fern, lady-. See Athyrium filix-foemina. 

 Fern, maidenhair-. See Adiantum pedatum. 

 Fern, male-. See Dryopteris filix-mas. 

 Fern, marginal-fruited shield-. See Dryopteris marginalis. 

 Fern, meadow-. See Comptonia peregrina. 

 Fern, parsley-. See Tanacetum vulgare. 

 Fern, royal. See Osmunda regalis. 

 Fern, sweet. See Comptonia peregrina. 

 Fernroot. See Polypodium vulgare. 

 Feverbush. See Benzoin benzoin and Ilex vertidUata. 

 Feverfew, common. See Chrysanthemum parthenium. 

 Feverroot. See Triosteum perfoliatum. 

 Fevertwig. See Celastrus scandens. 

 Field-balm. See Glecoma hederacea. 

 Field-larkspur. See Delphinium consolida. 

 Field-sorrel. See Rumex acetosella. 



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