16 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Bitter-buttons. See Tanacetum vulgare. 



Bitterroot. See Apocynum androsaemifolium. 



Bittersweet. See Solarium dulcama ra . 



Bittersweet, false. See Celastrus scandens. 



Bitterweed. See Erigeron canadensis. 



Blackberry, high-bush. See Rubus nigrobaccus. 



Blackberry, knee-high. See Rubus cuneifolius. 



Blackberry, low running. See Rubus procumbens. 



Blackberry, low-bush. See Rubus trivialis. 



Blackberry, sand-. See Rubus cuneifolius. 



Blackcap. See Rubus occidentalls. 



Blackroot. See Veronica virginica. 



Blackroot, Indian. See Pterocaulon undulatum. 



Blackwort. See Symphytum officinale. 



Bladderpod. See Lobelia inflata. 



Blazingstar. See Chamaelirium luteum. 



Blazingstar, blue. See Lacinaria scariosa. 



Blazingstar, scaly. See Lacinaria squawosa. 



Bloodroot. See Sanguinaria canadensis. 



Bloodwort. See LTieracium venosum. 



Blood wort, striped. See LTieracium venosum. 



Blowball. See Taraxacum officinale. 



Blue-curls. See Prunella vulgaris. 



Bog-bean. See Menyanthes trifoliata. 



Bog-myrtle. See Myrica gale. 



Boneset. See Eupatorium pert ol latum. 



Boneset, deerwort-. See Eupatorium ageratoldes. 



Boneset, purple. See Eupatorium purpureum. 



Bouncing-Bet. See Saponarla officinalis. 



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



Boxwood. See Cornus flonda. 



Brake, backache-. See Athyrlumfilix-foemina. 



Brake, buckhorn-. See Osmunda regain. 



Brake, rock-. See Polypodlum vulgare. 



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



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 used. — 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. — Koot (nonofficial). 



