ARTIFICIAL KEY. 



Ovary connected by vertical walls to the 

 hypanthinm. Petals 4. Herbs or MelaBiomaceae 

 shrubs with 3-5-nerved leaves . (p. 357) 



3. Stamens epigynons. L. simple. 



Herbs. Ovary 4-5-celled. . . . Onagrace© 



(p. 356) 

 Shrubs. Usually scandent or dwarf. Combretace© 

 Osary 1 -celled . . * . ' . "(p. 359) 



II. Stamens united. Fls. irregular . . Polygalacese 



(p. 264) 



III. Stamens free, or somewhat monodel- 

 phous (in Mimosaceae). Corolla 

 gamopetalous. 



1. Leaves simple alternate, 



Fls. dioecious. Stamens 8-many . Diospyros 



(p. 408) 



Fls. 2-sexual. St. 8 with alternating Mimusops 

 staminodes ..... (p. 407) 



2. L. opposite. St. 6-8. Fls. in capitate Symphorema 

 cymes (p. 488) 



3. L. 2-pinnate. Fls. very small in 



globose heads .... Mimosa (p. 286) 



Stamens 9. 



Vide also Si 7-11, and stamens 8-10 (Sapindacese). 



Dicotyledons. 



Fls. regular. Anthers opening by lids. Laurace© 

 Staminodes usually present . . (p. 150) 



Fls. irregular, papilionaceous . . Papilionace® 



(p. 308) 



monocotyledons. 



Trees or shrubs with pinnate leaves . Palm© (p. 545) 



113 



