50 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Nyssa ogeche Marsh. Dogwood family (Cornaceae). 



Synonym. — Xijnsa capitate Walt. 

 Sour tupelo; Ogeechee lime. 



A small tree, growing in swamps near the seacoast from southern South Caro- 

 lina to Florida. 



Part used. — Root wood (nonofficial). 

 Nysrn uniflora Wang. Samoa- Nyssa aquatica. 



Oak, champion-. See Quercus rt*6ra. 



Oak, .Jerusalem. See Chenopodium anthelmirUicum and C. botrys* 

 Oak, poison-. See Rhus radicans And R. toxicodendron. 



Oak, red. See Quercus riila-a. 



Oak, Spanish. See Querents rubra. 



Oak, stone-. See Quemts alba. 



Oak, white. See Quercus alba. 



Oenothera biennis L. Evening-primrose family (Onagraceae). 



Synonym. — Onagra biennis (L.) Scop. 



Evening-primrose; tree-primrose; night willow-herb. 



Annual or biennial plant, 2 to 5 feet high, common in fields and waste places 

 from Labrador to Florida, west to the Rocky Mountains. Native. 



Part used. — Plant (nonofficial). 

 Old-man's-beard. See CMonanthus virginica. 

 Olive, spurge-. See Daphne mezereum. 

 Onagra biennis (L. ) Scop. Same as Oenothera biennis. 

 Onosmodium virginianum (L. ) DC. Borage family (Boraginaceae). 



Synonym. — Lithospermum vvrginianwm L. 



Virginia false gromwell; gravel-weed; necklace- weed ; pearl-plant; wild Job's- 



tears. 



Rough-hairy, native, perennial herb, 1 to 2 feet high; in dry, hilly grounds 

 from the New England States to Florida, Kansas, and Texas. 



Paris used. — Root and seeds (nonofficial). 

 Opium, wild. See lactuca canadensis. 

 Orangeroot See Hydrastis canadensis. 

 Orobanche mrgmhna L. Same as Leptcsmnium virginianum. 

 Osier, golden. See Myrica gale. 

 Osier, green. See ( bmus drdnata. 

 ( >sier, red. See Cor mis amomum. 



orrh 



>ame as Washington^ Umgisiylis. 



Osmunda regalis L. Royal fern family ( Osmundaceae) . 



Royal fern; buck horn-brake. 



A tall, native fern, with fronds 3 to 4 feet high, occurring in swamps and marshes 

 from Canada to Florida and Mississippi. 



part used. — Rhizome (nonofficial). 

 Ostrya virginiana ( Mill. ) Willd. Birch family (Betulaceae). 



Hop-hornbeam; iron wood; deerwood; leverwood. 



Native tree, 25 to 30 feet in height, growing in rich woods, Canada and eastern 

 United States. 



Part used. — Bark (nonofficial). 



