64 WILD MEDICINAL PLANTS OF THE UNITED STATES. 







Seven-barks. See Hydrangea arborescens. 

 Shagbark. See Hicoria ovata. 



Shamrock. See Oralis acetosella. 

 Shamrock, water-. See Menyantkes trifaliata. 



Shave-grafis, See Equisetum hyemale* 

 Sheepberry. Set* Viburnum lentago. 



Sheep-laurel. See Kalinin angustifolia ami A", latifolia. 



Sheep-sorrel. See Rumex acetosella. 



Shell bark-hickorv. See Hicoria bvata. 

 Shellflower, See Chefone glabra. 



Shepherd' s-purse. See Bursa bursorpastoris. 

 Shepherd* a- weatherglass. See Anagcdlis arvenms. 

 Shield-fern, marginal -fruited. See Dryopieris marginalis. 



Shrub, sweet-scented. See Butneria florida. 

 Shrub yellowroot. See Xanthorrhiza apiifolia. 



Sieklewort. See Prunella vulgaris. 

 Sidesaddle-flower. See Sarraeenia purpurea. 

 Silk weed. See Asclepias st/riaea. 

 Silk weed, rose-col ore< I. See Asrlepias incarnata. 



Silk weed, swamp-. See Asclepias incarnata. 



Silphium laciniatum L. Aster family (Asteraceae). 



Rosin weed; compass-plant; pilotweed; poiar-plant. 



Coarse, native perennial, 3 to 12 feet high, growing on prairies from Ohio to 

 Alabama, west to Texas and South Dakota. 



Part used. — Herb (nonofficial). 



Silphium perfoliatum L. Aster family (Asteraceae). 



/ Cup-plant] Indian-cup; ragged-cup. 



Stout, perennial herb, 4 to 8 feet high, native in moist soil and low ground from 

 Ontario and the eastern United States west to Louisiana and Nebraska. 



Part used. — Root (nonoffieial). 



Silverleaf. See ImpaHens hijlora. Spiraea tomentosa^ and SMlingta sylvaiica. 



Silverleaf-poplar. See I'apulus alba. 



Simpler 7 s-joy. See Verbena hastata. 

 / Sinapis alba. See Sinapis aj}>a L. 



Sinapis alba L. Mustard family | Brassicaceae). 



Sinapis alba; white mustard; yellow mustard. 



Annual herb, about 2 feet in height, naturalized from Europe, and found in 

 fields and waste places, but not BO widely distributed as the black mustard. 



Part uxed.—&'^d (official). 

 Sinapis nigra. See Brassica nigra. 

 Sinapis nigr<t L. Same as Brassica nigra. 

 Skullcap. See Scutellaria lateriflora. 



Skullcap, hyssop-. See Scutellaria iutegrifolia. 



Skullcap, larger. See Scutellaria integrifolia. 

 Skunk-cabbage. See Spathyema foetida. 



Skunkweed. See SpatJujema foetida. 

 Sloe. See Viburnum prnnifolium. 



Smallpox-plant. See Sarracenia purpurea. 



