ARUM TRTPHYLLUM ASTHMA-WEED, QUEENSLAND. 13 



Arum triphylhnn L. Same as Arisaema tripltylluin. 



Asarum canadense L. Birthwort 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 (nonofiicial). 

 Asclepias. See Asclepias tuber osd. 

 AKrlejnan ammtl Dec. Same as Asclepias si/riara. 

 Asclepias incarnata J.. Milkweed family (Asclepiadaceae). 



White Indian hemp; swamp-milkweed; swamp-silkweed; rose-colored silkweed. 



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). 



iSyno7iynt. — Asclepias eornuti Dec. 

 Common milkweed; silkweed. 



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



to North Carolina and Kansas. 

 Part iised. — Root (nonofficial). 



Asclepias tuberosa L. Milkweed family (Asclepiadaceae). 



Asclepias; i)leurisy-root; butterfiy-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 Sorbus americana. 

 Ash, black. See Fraxinus nigra. 

 Ash, cane-. See Fraxinus americana. 

 Ash, hoop-. See Fraxinus nigra. 



Ash, prickly. See Fagara clara-liemills and XanllKi.ri/hini americanum. 

 Ash, wafer-. See Ptelea trifoliata. 

 Ash, white. See Fraxinus americana. 



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



North American pawpaw; custard -apple. 



Small, native tree, growing in rich soil alcjng the banks of streams from New 

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



Part used. — Seed (nonofficial). 

 Aspen, Aniei-ican. See Popidtts tremuloides. 

 Aspen, quaking. See Pupulus tremuloides. 

 Aspidium. See Dryopterisfilix-mas and D. utarginalis. 

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

 Aspidium marginale Sw. Same as Dryopteris viarginalis. 

 Asplenium jilix-foemina (L. ) Bernh. Same as Athyrivm Jilix-foemina. 

 Aster puniceus L. Aster family ( Asteraceae ) . 



Red-stalked aster; cocash; meadow-scabish. 



Perennial her)), 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 A.ster puniceus. 

 Asthma-weed, Queensland. See Euphnrhia jiilnllfera. 



