16 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Bitter-buttons. See Tanacetum vulgare. 



Bitterroot. See Apocynum androsaemifolium. 



Bittersweet. See Solanum dulcamara. 



Bittersweet, false. See Celastrus scandens. 



Bitterweed. See Erigeron canadensis. 



Blackberry, high-bush. See Rubus nigrobaccus. 



Blackberry, knee-high. See Ruhus ciineifoUus. 



Blackberry, low running. See Rubus procumbem. 



Blackberry, low-bush. See Rubus trivialis. 



Blackberry, sand-. See Rubus cuneifolius. 



Blackcap. See Rubus occidentaUs. 



Blackroot. See Veronica virginica. 



Blackroot, Indian. See Pterocaulon undulatum. 



Blackwort. See Sym2)hytmn officinale. 



Bladderpod. See Lobelia inflata. 



Blazingstar. See Chamaelirium luteum. 



Blazingstar, blue. See Lacinaria scariosa. 



Blazingstar, scaly. See Lacinaria squarrosa. 



Bloodroot. See Sanguinaria canadensis. 



Bloodwort. See Hieracium venosum. 



Bloodwort, striped. See Hieracium venosum. 



Blowball. See Taraxacum officinale. 



Blue-curls. See Prunella vulgaris. 



Bog-bean. See Menyanthes trifoliata. 



Bog-myrtle. See Myrica gale. 



Boneset. See Eupatoriwn perfoliatum. 



Boneset, deerwort-. See Eupatoviutn ageratoides. 



Boneset, purple. See Eupatoriwn purjnireum. 



Bouncing-Bet. See Saponaria officinalis. 



Bowman's-root. See Porteranthus trifoliatus and Veronica virginica. 



Boxwood. See Cornus florida. 



Brake, backache-. See Athyrium filix-foemina. 



Brake, buckhorn-. See Osmunda regalis. 



Brake, rock-. See Polypodium vulgare. 



Brassica nigra (L. ) Koch. Mustard family (Brassicaceae) . 



Synonym. — Sinapis nigra L. 



Sinapis nigra; black mustard; brown mustard; red mustard. 



Annual herb, introduced from Europe; found in fields and waste places almost 

 throughout the United States. 



Part MSfd.— Seed (official); the volatile oil obtained from black mustard seed is 

 also official. 

 Brauneria angustifolia (DC.) Heller. Aster family (Asteraceae). 



Synonym. — Echinacea angustifolia DC. 



Echinacea; pale-purple coneflower; Sampson-root; niggerhead (in Kansas). 



Native, perennial, herbaceous plant, 2 to 3 feet high, occurring in rich prairie 

 soil or sandy soil from Alabama to Texas and northwestward; most abundant 

 in Kansas and Nebraska. 



Part used. — Root (nonofficial). 



