FIGS. 416-424: Fig. 416. Bladdernut, Staphylea trifolia; Fig. 417. 4 prickly 

 ash, Zanthoxylum americanum; Fig. 418. Moonseed, Mcnispermum canadense; 

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

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

 strife, Steironema ciliatum; Fig. 423. Honewort, Cryptotaenia canadensis; Fig. 

 424. Cow parsnip, Hieracleum lanatum. 



