22 -{ 



KEY TO FAMILIES AND ABNORMAL GENERA, xxi 



{Ovary one-celled . 20 

 Ovary of several cells or carpels 22 



f Seed solitary : stipules tubular encircling the stem at each 

 I node. Leaves alternate . . . p. 338. polygonace^. 

 20 ■{ Seeds several on a central placenta. Herbs with opposite 

 I leaves and swollen nodes . . /• 29. CARYOPHVLLACEyE. 

 L Seeds several, on the walls of the ovary 21 



\ Climber with axillary tendrils : stamens and style raised on 



j a central column /• 163. passiflora. 



J Slender trailing herb with opposite gland-dotted leaves : 

 j flower yellow : stamens many . . /. 36. Hypericum. 

 I Herb with very sticky often red leaves : flower white : 

 L stamens five. In damp ground . . /. 145. drosera. 



[ Stamens five only, opposite the petals 23 



Stamens five, outside a crenulate disc : fruit three-celled : 



leaves pinnate. Tree /. 90. turpinia. 



Stamens ten or five and five staminodes : petals twisted in 



bud. Fruit five-celled 24 



Stamens five, opposite the sepals. Leaves covered with 



sticky hairs /• 145- drosera. 



Stamens many united or free 25 



r Climbers with tendrils opposite the leaves . /. 86. viTis. 

 23 -j Trees or shrubs : fruit with one or more stones .... 



[ /. 82. RHAMNACE/E. 



r Fruit splitting into five, long-tailed, one-seeded carpels. . 



I /-SI- GERANIE/E. 



Fruit splitting into five two-seeded or ten one-seeded 



parts : leaves entire.. /• 5o- linum. 



Fruit opening along five lines, the carpels not separating 



from each other /• 54- oxalide^e. 



[Carpels quite distinct .26 



\ Ovary of three to ten cells. ......... 27 



Trees : branches ringed at each leaf: flowers 2 to 3 inches 

 across : fruiting carpels J^ inch a spike of 3 to 5 inches. 



/. 9. MAGNOLIACE/E. 



26 ■{ Herbs : no epicalyx below the sepals ....... 



p. I. RANUNCULACE^. 



Prickly shrubs or if herbs then with five bracteoles imme- 

 diately below the sepals /. 129. ROSACEiE. 



r Trees : leaves finely serrate : flowers J^g inch, in small 



J subsessile bunches A 4i- eurya. 



' I Herbs : leaves divided or lobed : flowers J^ to 2 inches : 

 [ anthers numerous kidney-shaped. . /. 43. Malvaceae. 



24-! 



