KEY 



24. 



22. 



Flowers not in catkins ; calyx present, 

 sometimes petal-like. 



(1) Trees or shrubs. 



Flowers uot hypogynous ; plants not climbing . 

 Flowers not liypogynous ; climbing plants . 

 Flowers hypogynous. 



Style single, not cleft, fruit a key (Fraccinus) 



Style single, not cleft, fruit a drupe 



Styles 2 or 2-cleft, fruit 1-celled .... 



Styles 2 or 2-cleft, fruit 2-celled .... 



Styles 3, each 2-cleft. Ovary 3-celled . 



(2) Herbs. 



Flowers not liypogynous ; ovary 6-celled . 

 Flowers not hypogynous ; ovary 1-celled ; flowers 



in umbel-like clusters 



Flowers hypogynous. 

 (a) Ovary 1-celled. 



Stamens many 33. 



Stamens few. 



Stipules sheathing the joints 25. 



Stipules wanting. 



Bather fleshy herbs 26. 



Not fleshy. 

 Ovules on a free central placenta ; deli- 

 cate, soft-leaved herbs. (Stellaria) . . 31. 



Ovule single, coarse herbs 27. 



(6) Ovary several-celled. 



Small prostrate herb ; leaves spatulate, whorled 29. 

 Stipules present, not sheathing. 



Style single 21. 



Styles 2 20. 



Flowers hypogynous, ovary 3-celled .... 64. 

 Flowers hypogynous, ovary 5-10-celled; fruit a 

 berry 28. 



Family 



Page 



Dutchman's Pipe 68 

 Sandalwood . . 67 



Buttercup . 

 Buckwheat 

 Goosefoot . 



Pink . . 

 Amaranth . 



Ice Plant . 



Nettle . . 

 Mulberry . 

 Spurge . . 



Pokeweed . 



83 

 69 



77 

 74 



. 76 



. 66 



. 64 



. 145 



. 75 



