416 



419 



420 



421 



423 



4,24 



Figs. 416-424: Fig. 416. — Bladdernut, Slaphylea trifolia; Fig. 417. — prickly 

 ash, Zanthoxylum americanum; Fig. 418. — Moonseed, Mcnispcrmum canadcnsc; 

 Fig. 419. — Smilax, Smilax hispida; Fig. 420. — Skunk cabbage, Symplocarpus 

 foetidus; Fig. 421. — Cheveril, Chaerophyllum procumbens; Fig. 422. — Fringed loose- 

 strife, Steironcma ciliatum; Fig. 423. — Honewort, Cryptolaenia canadensis; Fig. 

 424. — Cow parsnip, Hieradeum lanatum. 



