20. KEY TO THE FAMILIES. 



Ovary 2—3 celled. (Commiphora) 76 BURSERACEAE. 



Plants differing from Commiphora in one or more respects. 190 



190. Trees with opposite or whorled, stipulate leaves and both 



sepals and petals valvate or induplicate-valvate in the 



bud. 109 RHIZOPHORACEAE. 



Leaves alternate or exstipulate or either sepals or petals or 



both imbricate in the bud or herbs. 191. 



191. Stamens numerous, all united. Anthers 1 celled. 



95 MALVACEAE. 

 Stamens free, or if united, then anthers 2 celled. 192. 



192. Leaves opposite undivided exstipulate: Stamens numerous. 



98 GUTTIFERAE. 

 Leaves alternate or stipulate or stamens definite. 193. 



193. Filaments united at least at the base. 194. 

 Filaments free or united in bundles. 196. 



194. Sepals valvate in the bud. 9S STERCUL1ACEAE. 

 Sepals imbricate in the bud. 19S. 



195. Stigmas 5. Herbs or undershrubs. 70 GERANIACEAE. 

 Stigmas 1—3. Trees or shrubs. 77 MELIACEAE. 



196. Herbs with 5 lobed, S celled beaked ovary. Leaves stipulate. 



70 GERANIACEAE. 



Trees or shrubs, or if herbs then ovary not S lobed, S celled 



and beaked. 197. 



197. Leaves simple stipulate, not gland dotted. Sepals valvate. 



94 TILIACEAE. 

 Leaves exstipulate, but sometimes with axillary spines. 198. 



198. Leaves gland dotted. Flowers mostly regular. 



75 RUTACEAE. 



Leaves not gland dotted. Flowers irregular or stamens fewer 



than twice the petals. 89 SAPINDACEAE. 



199. (181) Stamens as many to twice as many as the petals. 200. 

 Stamens more than twice as many as the petals. 2OS. 



200. Filaments free. 201. 

 Filaments united at least at the base. 203. 



201. Leaves gland dotted exstipulate, but sometimes with axillary 



spines. 75 RUTACEAE. 



Leaves stipulate but stipules sometimes small and caducous. 



2O2. 



202. Leaves opposite or whorled. (Cunonia). 



63 CUNONIACEAE. 

 Leaves alternate. 80 EUPHORBIACEAE. 



203. Flowers unisexual. 80 EUPHORBIACEAE. 

 Flowers hermaphrodite. 2O4. 



204. Sepals valvate in the bud united below. 



96 STERCULIACEAE. 

 Sepals imbricate in the bud. (Oxalis). 71 OXALIDACEAE. 



