59 



KEY TO TRIBES. 



SERIES A. 



Flowers in dense globose heads. Corolla funnel-shaped. 

 Stigma simple. 



Corolla valvate. Fruit indehiscent, 2-coccous, or cap- 

 sular, 2-celled. 



Corolla twisted in bud. Seeds large, compressed, or 

 small and angular, 



SERIES B. 

 Not Represented in Natal. 



SERIES C. 



Radicle superior. 



Radicle inferior. 



1 Corolla valvate. Inflorescence terminal. Herbs. 



1 Corolla contorted or imbricate. Shi'ubs or trees. 



1 Corolla valvate. Inflorescence axillary. , Shrubs 



or trees. 



2 Corolla contorted. Style long exserted, stigma 



clavate. 

 2 Corolla valvate. Stigma entire, or style arms 



short. Fruit indehiscent. 

 2 Corolla contorted. Style 1, stigma 2-lobed, 



lobes obtuse, linear or spathulate. 

 2 Style arms filiform. Fruit 2-coccous. 

 2 Styles 2, stigmas capitate. 



KEY TO GENERA. 



SERIES A. 



Nauolee^. 



Ovary 2-ceUed, ovules pendulous. Shrubs or smaU 

 trees. 



Nauclee^. 



Hedyotide^-. 



Gaedenie^. 



Knoxie^. 

 Albertie^. 



Vangdeme^. 



Ixore^. 



psyohotriej;. 



Spermacocej]. 



Anthosper^ie*. 



Galie^. 



Cephalanthus. 



Hedyotide-s:. 



Calyx lobes unequal. Style arms papillose on both 



surfaces. Flowers cymose. Pentas. 



Calyx lobes equal or nearly so. Style arms smooth 

 on outer surfaces, stigmatose within. Flowers 

 in terminal or axillary panicles. Oldenlandia. 



