List of Families and of Genera. xv 



Family 17. Asclepiadace*: (Milkweed Genus Vincetoxicum, Mo- 

 Fam -) ench. (Black Milk- 



weed). 

 Genus Gonolobus, Mx. 

 (Rough-Fruited Milk- 

 weed). 

 Family 18. Convolvulace^e (Convol- Genus Ipomcea, L. (Morn- 

 vulus Fam.) ing-Glory). 



Genus Convolvulus, Tourn. 



(Bindweed). 

 Genus Breweria, R. Br. 



(Breweria). 

 Genus Cuscuta, Tourn. 

 (Dodder). 

 Family 19. Solanace^e (Nightshade Genus Solanum, Tourn. 

 Fam.) (Woody Nightshade). 



Genus Lycium, L. (Matri- 

 mony-Vine). 

 Family 20. Bignoniace^e (Bignonia Genus Tecoma, Juss. (Trum- 



Fam.) pet-Creeper). 



Family 21. Labiate (Mint Fam.) Genus Nepeta L. (Gill-over- 



the-Ground). 

 Family 22. Polygonace^e (Buckwheat Genus Polygonum, Tourn. 



Fam.) (Knotweed). 



Family 23. Aristolochiace^e (Birth- Genus Aristolochia, Tourn. 



wort Fam.) (Pipe-Vine). 



Family 24. UrticacejE (Nettle Fam.) Genus Humulus, L. (Com- 

 mon Hop). 

 Family 25. Liliace^e (Lily Fam.) Genus Smilax, Tourn. 



(Greenbrier). 

 Family 26. FfLiCES (Fern Fam.) Genus Lyg5dium, Swartz. 



(Climbing Fern). 

 Family 27. Lycopodiace^e (Club-Moss Genus Lycopbdium, L. 

 Fam.) (Club-Moss). 



