26. KEY TO THE FAMILIES. 



285. Stamens inserted at base of corolla. 41 NYCTAGINACEAE. 



Stamens inserted at or above middle of corolla. 286. 



286. Stamens fewer than corolla divisions 4. 



131 VERBENACEAE. 

 Stamens as many as divisions of corolla. 



40 AMARANTACEAE. 



287. Ovules attached to 1 parietal placenta or stamens more than 



corolla lobes. 



69 LEGUMINOSAE. 



Ovules attached to 2 or more parietal placentas or stamens as 



many as corolla lobes or fewer. 288. 



288. Ovules 2. 289. 

 Ovules 3 or more. 291. 



289. Stamens opposite corolla lobes. (Waltheria). 



96 STERCULIACEAE. 

 Stamens alternating with corolla lobes. 290. 



290. Ovules erect. Style 2 parted, or if simple then herbs. 



129 CONVOLVULACEAE. 

 Ovules pendulous. Style simple or wanting, shrubs or trees. 



88 ICACINACEAE. 



291. Ovules basal or on a free central placenta. 292. 

 Ovules parietal. • 297. 



292. Style 3 cleft. Sepals 2. (Portulaca). 



44 PORTULACACEAE. 

 Style simple or 2 cleft. 293. 



293. Stamens as many as and opposite corolla lobes. 294. 

 Stamens fewer than or alternating with corolla lobes. 295. 



294. Fruit a capsule. Herbs or undershrubs. 



120 PRIMULACEAE. 

 Fruit a nut berry or drupe. Leaves alternate, gland dotted. 



119 MYRSINACEAE. 



295. Stamens 5. Flowers regular. 129 CONVOLVULACEAE. 

 Stamens 2 or 4. 296. 



296. Herbs. Leaves alternate or radical. Stigma sessile. 



139 LENTIBULARIACEAE. 

 Leaves opposite or whorled. Style present. 



131 VERBENACEAE. 



297. (291) Style 3 — 10 cleft. Flowers unisexual or polygamous. 



102 ACHAR1ACEAE. 

 Style 1 or 2 cleft. 298. 



298. Fertile stamens fewer than corolla lobes 1 — 4. 299. 

 Fertile stamens, as many as or more than corolla lobes. 301. 



299. Fertile stamen 1. Staminodes 3. Herbs. Leaves opposite. 



126 GENTIANACEAE. 

 Fertile stamens 2 or 4. 300. 



