60 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Rubus procurnbens Muhl Rose fainily (Rosaceae). 



Synonym. — Rubus canadensis T. & G., not L. 



Rubus; low running blackberry; dewberry. 



Shrubby, trailing plant, found in dry soil from Newfoundland to Lake Superior, 

 south to Virginia and the Indian Territory. 



Part used.— Bark of root (official in IT. S. P. 1890). 

 Rubus strigosus Michx. Rose family (Rosaceae). 



Wild red raspberry. 



Shrubby plant, found in dry or rocky situations from Canada to Xorth Carolina 

 and New Mexico. 



Parts used. — Fruit and leaves (nonofficial). 

 Rubus trivialis Michx. Rose family (Rosaceae). 



Rubus; southern dewberry; low-bush blackberry. 



Shrubby, procumbent plant, found in sandy soils, Virginia to Florida, west to 

 Missouri and Texas. 



Part used.— Bark of root (official in U. S. P. 1890). 

 Pubus mllosus A. Gray, not Ait. Same as Rubus nigrobaccus. 

 Rubus villosus Ait. Rose family (Rosaceae). 



Rubus: one-flowered dewberry. 



Trailing plant, with slender branches, growing in sandy or dry soil near the 

 coast from Maine to South Carolina. 



Part used. — Bark of rhizome (official) 

 Rudbeckia laciniata L. Aster family ( Asteraceaei . 



Thimbleweed; tall coneflower. 



Much-branched, native perennial, 3 to 12 feet high; in moist thickets, Canada 

 and Montana, south to Florida and Xew Mexico. 



Part used. — Herb (nonofficial). 

 Rum-cherry. See Prunus serotina. 

 Rumex. See Rumex crispus. 

 Rurnex acetosella L. Buckwheat fainily ( Polygonaceae) . 



Sheep-sorrel; field-sorrel; sour-grass; common sorrel. 



Annual or perennial herb, abundant in dry fields, pastures, and waste ground 

 throughout the United States. 



Part used.— Leaves (nonofficial). 

 Rumex crispus L. Buckwheat family (Polygonaceae). 



Rumex; yellow dock; curled dock; narrow dock; sour dock. 



A weed introduced from Europe, and common in cultivated and waste ground 

 throughout the United States. Perennial plant, 2 to 4 feet high. 



Part used. — Root of this and some other species of Rumex (official in U. S. P. 

 1890). 



Rumex obtusifolius L. Buckwheat family (Polyg-onaceae). 



Bitter dock; blunt-leaved dock; broad-leaved dock. 

 A perennial weed, 2 to 4 feet high, naturalized from Europe, and found in waste 



places from >'ew England to Florida, west to Texas and Oregon. 

 Part used. — Root, collected with that of Rumex crispus. 



Sabal. See Serenoa serrulata. 



Sabbatia annularis (L.) Pursh. Gentian family ( Gentianaceae). 



American centaury; rose-pink; bitterbloom; bitter clover. 



Native, biennial plant, 1 to 2 feet high, growing in damp, rich soil, in meadows 

 and among high grass, from Xew York to Michigan, south to Florida and 

 the Indian Territory. 

 Part used. — Herb (nonofficial). 



