452 Annals of the South African Museum. 



Flowers cither all umbellate, or solitary and umbellate 

 on the same plant. 

 Calyx-lobes almost as long as the corolla, 3 times 



or more as long as the tube . . . .12. corylifolia. 



Calyx-lobes much shorter than the corolla, about 

 half as long again as the tube. 

 Corolla spotted with lilac . . . . .13. maculosa. 



Corolla not spotted . . . . . .14. natalensis. 



Leaves simple or divided, linear, or leaf-lobes Linear, rarely 

 lanceolate or linear-lanceolate. 

 Calyx-tube pubescent. 



Corolla albo-pubescent ; stamens not half as long as 

 the corolla. 

 Corolla-lobes less than *5 cm. long ; filaments flat, 



triangular-ovate . . . . . .15. lovgifiora. 



Corolla-lobes more than 1 cm. long ; filaments 



terete ......... 16. longiloba/a. 



Corolla glabrous ; stamens more than half as long as 



the corolla ........ 17. Schlechteri. 



Calyx-tube glabrous. 



Leaves digitately compound. 



Infioresence distinctly marked off from the leafy 

 stem; bracts subulate, sometimes 2-toothed at 



the base . . 18. triphylla. 



Inflorescence not distinctly marked off from the 



leafy stem ; bracts 3-5-lobed .... 19. digitata. 

 Leaves simple, very rarely digitately trifoliate ; if so, 

 then the stamens not half as long as the corolla, 

 or the leaves 5-6 mm. broad. 

 Stamens less than half as long as the corolla. 



Corolla regular, not bilabiate .... 20. zeyheriana. 

 Corolla bilabiate. 



Corolla-segments widened into a distinct limb 

 wider than the claw ; calyx-lobes broadly 

 ovate, entire, very rarely toothed . . 21 oolubMs. 



Corolla-segments linear with the limb as broad 

 as the claw; calyx lobes ovate-linear 

 2-4-toothed at the base . . . .22. Tysonii. 



Stamens half as long or more than half as long as 

 the corolhi. 

 Calyx-tube saucer-shaped (almost obsolete) ; 



Lobes linear, obtuse . . .23. crenata. 



Calyx-tube turbinate or eampanulate, lobes 

 ovate or sometimes ovate-linear, acuminate, 

 acute. 

 A more or less erect plant; leaves usually 



sessile 2-4. undulata. 



A very evident twiner; leaves usually shortly 



petioled .25. sylvatica. 



