KEY 



Flowers not in catkins ; calyx present, 

 sometimes petal-like. 



(1) Trees or shrubs. 



Flowers not hypogynous ; plants not climbing . 



Flowers not hypogynous ; climbing plants . 



Flowers hypogynous. 

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

 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 hypogynous ; ovary fi-celled . . . 

 Flowers not hypogynous ; ovary 1-celled ; flowers 



in umbel-like clusters 



Flowers hypogynous. 

 (a) Ovary 1-celled. 



Stamens many 



Stamens few. 



Stipules sheathing the joints 



Stipules wanting. 



Rather fleshy herbs 



Not fleshy. 

 Ovules on a free central placenta ; deli- 

 cate, soft-leaved herbs. {Stellaria) . 



Ovule single, coarse herbs 



(6) Ovary several-celled. 



Small prostrate herb ; leaves spatulate,whorled 

 Stipules present, not sheathing. 



Style single 



Styles 2 ... 



Flowers hypogynous, ovary 3-celled .... 



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



berry 



Family 



74. Dogwood . 

 24. Dutchman's V 



70. Olive 

 38. Laurel 

 19. Elm . 

 59. Maple 

 54. Spurge 



24. Dutchman's 1 

 22. Sandalwood 



33. Buttercup . 



25. Buckwheat 



26. Goosefoot . 



31. Pink . 

 27. Amaranth 



20. Ice Plant 



21. Nettle . 

 20. Mulberry 

 54. Spurge . 



Page 



. 175 



pe 08 



180 



95 



62 



151 



145 



ipe 68 



. 67 



, . 83 

 . . 60 

 , . 72 



77 

 74 



70 



66 



64 



145 



28. Pokeweed 



