6 PERNS AND 



AMBRINA, Spach. 



anthelminttca, Spach. wormseed. 



botrys, Moquin. Jerusalem oak. [tea. 



ambrosioides, Spach. sweet pigweed ; American 

 AMARANTHUS, L. 



spinosus, L. spiny amaranth. 



hibridus, L. hybrid amaranth. 

 ANTENNARIA, Gcerin. everlasting. [ing. 



plantaginifolia, Hooker, plantain leaved; everlast- 

 ASIMINA, Adans. papaw. 



triloba, Dunal. common papaw. 



B. 



BAPTISIA, Vent, wild indigo. 



australis, R. Brown, blue false indigo, 

 leucantha, Torry 6f Gray, white wild indigo. 



BARBAREA, R. Brown, winter cress. 



vulgaris, R. Br. yellow water rocket. 

 BIDENS, L. burr marigold. [igold. 



chrysanthemoides, Mich, large-flowered burr mar- 



frondosa, L. burr marigold. 



bipinnata, L. beggar ticks. 

 BENZOIN, Nees. wild allspice. 



odoriferum, Nees. spice bush ; fever bush. 

 BOTRYCHIUM, Schwartz, moonwort. 



fumarioides, Willd. 



virginicum, Schwartz, rattlesnake fern. 

 BROMUS, L. brome grass. 



purgans, Willd. 



secalinus, L. chess; cheat. 



pubescens, Muhl. brome grass. 



c. 



CACALIA, L. Indian plantain. 



atriplicifolia, L. pale Indian plantain, 

 suaveolens, L. sweet-scented, 

 reniformis, Muhl. great Indian plantain. 



CALTHA, L. marsh marigold. 



palustris, L. 

 CALYSTEGIA, R. Br. bracted bindweed. 



spithamsa, Pursh. erect bindweed. 

 CAMPANULA, Tourn. bell-flower. 



americana, L. tall bell-flower. 



aparinoides, Pursh. slender bell-flower. 



