KEY TO THE FAMILIES. 27. 



300. Fertile stamens 2. Herbs. (Streptocarpus). 



138 GESNERACEAE. 

 Fertile stamens 4. Trees or shrubs. 136 BIGNONIACEAE. 



301. Stamens as many as corolla lobes. 302. 

 Stamens more than corolla lobes. 304. 



302. Leaves alternate. Tree. (Pittosporum). 



62 PITTOSPORACEAE. 

 Leaves opposite or whorled, or if not, then herbaceous. 303. 



303. Stem woody. Leaves opposite or whorled, usually stipulate. 



Flowers 4-merous. 125 LOGANIACEAE. 



Stem herbaceous or, if not, flower 5-merous. Leaves ex- 

 stipulate. 126 GENTIANACEAE. 



304. Sepals 4 — S. Corolla lobes 4 — 5. Stamens 8 — 10. 



77 MELIACEAE. 

 Sepals 3, corolla lobes 6, stamens numerous. 



50 ANONACEAE. 



305. (282) Corolla scarious regular, 4 Iobed. Stamens 4, stigma 1. 



141 PLANTAGINACEAE. 



Corolla more or less irregular, or if regular, stamens 2 or 



stigmas 2. 306. 



306. Ovary 2 celled. 307. 

 Ovary 3 or more celled. 3a6. 



307. Ovules solitary in each ovary cell. 308. 

 Ovules 2 or more in each ovary cell. 314. 



308. Fertile stamens 2 or 4. 309. 

 Fertile stamens 5 or more. 312. 



309. Corolla regular, stamens 2. 124 OLEACEAE. 

 Corolla more or less irregular. 310. 



310. Leaves alternate, at least the upper ones. 



135 SELAGINACEAE. 

 Leaves opposite or whorled. 311. 



311. Seeds borne on a hook like outgrowth of the funicle. 



140 ACANTHACEAE. 

 Seeds not on a hook like outgrowth of funicle. 



131 VERBENACEAE. 



312. Flowers irregular. 79 POLYGALACEAE. 

 Flowers regular or nearly so. 313. 



313. Flowers unisexual. 80 EUPHORBIACEAE. 

 Flowers hermaphrodite. 122 SAPOTACEAE. 



314. (307) Flowers irregular. Seeds borne on a hook like out- 



growth of funicle. 140 ACANTHACEAE. 



Seeds not borne on a hook like outgrowth of funicle. 315. 



315. Trees and shrubs. Leaves opposite stipulate or connected by 



transverse lines or ridges. Flowers often nearly regular. 

 Stamens 4—6, as many as petals. 125 LOGANIACEAE. 



Not as for Loganiaceae. 316. 



C 



