KEY TO THE FAMILIES 39 



7. Ovary more than 1-celIed. 



8. Flowers unisexual 75. Euphorbiaceae (p. 279) 



8. Flowers perfect. 



9. Styles free, very numerous; leaves entire. 



54. Anonaceae (p. 205) 

 \ (Anona) 

 9. Styles free, about 10, radiate; leaves toothed. ■■ 



87. Dilteniaeeae (p. 331) 

 (Dillenia) 

 9. Styles simple or entirely united. 



10. Ovary raised on a stalk; woody, usually spiny vines 



or shrubs 59. Capparidaceae (p. 214) 



{Cappatia) 

 10. Ovary not raised on a stalk. 



11. Leaves not glandular^dotted, not jointed to the 



petiole ., 83. Tiliaceae (p. 312) 



11. Leaves glandular-dotted, jointed to the winged 



petiole 69. Rutaceae (p. 268) 



(Citrus) 

 5. Leaves opposite; sepals connate into a tube, the lobes valvate. 



97. Lythraceae (p. 840) 

 3. Stamens few, never more than twice as many as the petals. 

 4. Leaves simple. 



5. Tendril-bearing vines. 



6. Flowers small to large, perfect, mostly solitary; ovary 1- 



celled, many ovuled 93. Paasifloraceae (p. 335) 



6. Flowei-s small, often uinsexual, numerous; ovary several- 

 celled, the ovules few 82. Vitaceae (p. 309) 



5. Shrubs, trees, or woody vines, without tendrils. 

 6. Leaves opposite. 



7. Erect shrubs; stamens 10 73. Malpighiaoeae (p. 277) 



7. Woody vines; stamens 5 or less, on the prominent disk. 



78. Hippocrateaceae (p. 302) 



7. Shrubs or low herbs; stamens 8 97. Lythraceae (p. 340) ' 



6. Leaves alternate. 



7. Stamens as many as the petals. 



8. Stamens 3, alternating with cleft staminodes; woody 



vines 40. Olacaceae (p. 185) 



8. Stamens 4 to 6. 



-9r»Stamens united in a tube 86. Sterculiaceae (p. 326). 



(Meloehia) 

 9. Stamens free. 



10. Stamens opposite the petals. 



11. Flowers perfect 81. Rhamnoceae (p. 807) 



11. Flowers unisexual. 



52. Menispermaceae (p. 203) 

 10. Stamens alternate with the petals. 

 11. Ovary 1-celled; ovules many. 



62. Pittoaporaceae (p. 219) 

 11. Ovary several-celled; ovules 1 or 2 in eadi cell. 

 12. Flowers unisexual. 



75. Euphorbiaceae (p. 279) 

 12. Mowers perfect 77. Celaatraceae (p. 301) 



