WASH I XCTOX, AND MARIOX COUNTIES. 41 



Genus Rudbeckia, Cone-flower. 



334. , Rudbeckia laciniata (L.) 



335- . R- triloba (L.) 



336. , R. hirta (L.) 



Genus Echinacea, Purple Cone-flower. 



337. Purple Cone-flower, Echinacea purpurea (Mcench.) 



Genus Ffelianthus, Sunflower. 



338. Common Sunflower, Helianthus annuus (L.) 



339. , H. atrorubens (L.) 



340. , H. occidentals (Riddell.) 



34L _ 1 H. giganteus (L.) 



342. , H. grosse-serratus (Martens.) 



343. , H. strumosus (L.) 



344. , II. divaricatus (L.) 



345. , H. doronicoides (Lam.) 



Genus Actinomeris, Actinomeris. 



346. , Actinomeris squarrosa (Nutt.) 



Genus Coreopsis, Tickseed, 



347. , Coreopsis senifolia (Michx. ) 



348. Tall Coreopsis, C. tripteris (L.) 



Genus Bidens, Bur- marigold. 



349. Common Beggar-ticks, Bidens frondosa ( L.) 



350. Swamp Beggar ticks, B. connata (Muhl.) 



351. Spanish Needles, B. bipinnata (L.) 



Genus Dysodia. Fetid Marigold. 



352. Fetid Marigold, Dysodia chrysanthemoides (Lag.) 



Genus J lelcnium . Sneeze-weed. 



353. Sneeze-weed, Helenium autumnale (L.) 



Genus Manila, May-weed. 



354. Dog Fennel, Maruta Cotula (DC.) 



Genus Anthemis, Chamomile. 



355. Corn Chamomile, Anthemis arvensis (L.) 



Genus Achillea. Yarrow. 



356. Milfoil, Achillea Millefolium (L.) 



