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ARUM TRIPHYLLUM ASTHMA-WEED, QUEENSLAND. 13 



Arum triphyllum L. Same as Arisama triphyUum. 



Asarum canadense L. Birth wort family (Aristolochiaceae). 



Canada snakeroot; wild ginger; Indian ginger. 



Perennial herb, about 1 foot in height, native in rich woods from Canada to 

 North Carolina and Kansas. 



Parts used. — Rhizome and rootlets (nonofficial). 

 Asclepias. See Asclepias tuber ma, v 

 Asclepias cornuti Dec. Same as Asclepias syriaea. 



Asclepias incarnata L, Milkweed family (Asclepiadaceae). 



White Indian hemp; swamp-milkweed; swamp-milkweed; rose-colored silk weed. 



Perennial herb, 2 to 4 feet high, native in swamps from Canada to Tennessee and 

 Kansas. 





Part used. — Root (nonofficial) . 



Asclepias syriaca L. Milkweed family | Asclepiadaceae). 



Synonym. — Asclepias cornuti Dec. 

 Common milkweed; silk weed. 



Perennial herb, 3 to 5 feet high, native in fields and waste places from Canada 

 to North Carolina and Kansas. 



Part used. — Root (nonofficial). 



Asclepias tuberosa L. * Milkweed family (Asclepiadaceae). 



Asclepias; pleurisy-root; butterfly-weed; Canada-root; whiteroot. 



Native, perennial herb, 1 to 2 feet high, growing in dry fields from Canada to 

 Florida and Arizona; most abundant southward. 



Part used.— Root (official in U. S. P. 1890). 

 Ash, American mountain-. See Xorbus americana. 



Ash, black. See Fraxinus nigra. 



Ash, cane-. See Fraxinus americaua. 



Ash, hoop-. See Fraxinus nigra. 



Ash, prickly. See Fagara dam-herculis and Xantho.rylum americanum. 



Ash, wafer-. See Ptelea trifoliata. 



Ash, white. See Fraxinus americanu. 



Asimina triloba (L.) Dunal. Custard-apple family (Anonaceae). 



North American pawpaw; custard-apple. 



Small, native tree, growing in rich soil along the banks <»f streams from New 

 York to Michigan and southward. Most common in the Ohio Valley. 



Part used. — Seed (nonofficial). 

 Aspen, American. See Poptdus tremuioides. 



i 



Aspen, quaking. See Populm tremuloides. 

 Aspidium. See Dryopterisfilix-mas and D. marginalis. 

 Aspidium filix-mas Sw. Same as Dryopteris Jilix-uats. 

 Aspidium marginal* Sw. Same as Dryopteris marginalis. 

 Isplenium filix-foemina (L. ) Bernh. Same as Athyrium filix-foemina. 



Aster puniceus L. Aster family { Asteraceae). 



Red-stalked aster; cocash; meadow-scabish. 



Perennial herb, with stout, reddish stem, 3 to 8 feet high, native; in swamps 

 and on banks of streams, Nova Scotia to Minnesota, south to North Carolina, 

 Ohio, and Michigan. 



Part used. — Root (nonofficial). 

 Aster, red-stalked. See Aster puniceus. 

 Asthma-weed, Queensland. See Euphorbia pilulifera. 



