Flora of Canada. 15 



H. venosum — Rattlesnake Weed. 

 Nabalus altissimus — Tall White Lettuce. 

 N. a.'bus — Common White Lettuce. 

 Taraxacum dens-leonis — Dandelion. 

 Lactuca Canadensis — Wild Lettuce. 

 Rudbeckea lacimata — Common Cone Flower. 

 Bidcns Beckii — Water lUir Marigold. 

 B. chrysanthemoides — Lar<^c ]5ur Marigold. 



B. connata — Swamp i^ur Mariij-old. 

 Cirsium lanceolatum — Common Thistle. 



C. arvense — Canada Thistle. 

 C. horridulum — Yellow Thistle. 

 C. pumiluin — Field Thistle. 



C. multicum — Sv/amp Tliistle. 

 C. altissimum — Tail Thistle. 

 C. discolor — Two-colored Tlii.-5tle. 

 Lappa officinalis — Burdock. 

 Carthamus tinctorious — Safllov/cr. 

 Xantheum strumarium — Cocklebur. 

 Ambrosia trifida — Great Racr Weed. 

 A. artemisiafolia — Bitterwced. 

 Artemisia biennis — Biennial Wormwood. 

 A. absinthium — Common W^ormwood. 

 Tanacetum vulgare — Common Tansy. 

 Ercchthites hieracifolia — Firevrced. 

 Gnaphalium polycephalum — Everlasting. 

 G. decurrcns — Uccurrent Everlasting-. 

 G. uirlinosum — Low Cudv/eed. 

 Mikana scandcns — Climbing Hcmpwccd. 

 Liatris tenuifolia — Blazincr Star. 



