THE MUSS^NDAS OF THE AFRICAN CONTINENT 235 



c. Corolla glabrous externally, or with a few 

 closely adpressed hairs. 

 Branchlets hispidulous with rather long sub- 

 patent hairs (ex descr.) 4. monticola. 



Branchlets minutely pubescent or puberu- 

 lous, or glabrescent. 

 Branchlets not glabrous, stipules bifid. 

 Ovary four or five times as long as the 



calyx-teeth 5. Buntingii. 



Ovary subequal to the calyx-teeth... 6. Chippii. 

 Branchlets glabrous, stipules entire... 7. abyssinica. 

 cc. Corolla puberulous, pubescent or hispidulous 

 externally (sometimes subglabrous in M. 

 Isertiana). 

 Stalk of petaloid calyx-lobe usually less than 

 1 cm. ; small lobes very short and 



broader than long 8. Isertiana. 



Stalk of petaloid calyx-lobe usually reaching 

 2-3 cm. ; small lobes much longer 

 than broad. 

 Corolla-tube barely 2 cm., limb more 

 than half tube-length in diameter 



9. brachyantha. 

 Corolla-limb upwards of 2*5 cm., limb 

 usually much less than half-tube length. 



Calyx lobes oblong-obtuse 10. afzelioides. 



Calyx-lobes acute-acuminate or subulate. 

 Branchlets densely hispidulous with 



red deflexed hairs 11. landolphioides. 

 Branchlets shortly puberulous or 

 pubescent. 

 Corolla-tube 2*4-2-6 cm. ; leaves 



truncate at base (ex descr.) 12. obtusa. 

 Corolla-tube upwards of 3 cm. ; 

 leaves not truncate. 

 Primary peduncles short 13. angolensis. 

 Primary peduncles 3-4 cm. long 



14. microdonta. 

 bb. Primary lateral leaf- veins 3-4 on either side of 

 midrib. Corolla-tube glabrous or nearly so 



externally 15. polita. 



Calyx-lobes relatively long and narrow, subsetaceous if 

 short; or narrowly lanceolate or oblong-lanceolate or 

 linear oblong. 



d. Calyx-lobes short, 5-6 mm. at most, unless setaceo- 

 acuminate, then as much as 8 mm. 

 Calyx-lobes filamento-setaceous in the capsular 



fruit 16. luteola. 



Calyx-lobes not filamentous. 



Ovary and calyx glabrous, or sparsely and inter- 

 ruptedly pubescent ; corolla glabrous or 

 scantily pubescent. 

 Stipules ample, over 7 mm. x 5 mm., un- 

 divided ; inflorescence with long divaricate 



peduncles 17. perlaxa. 



Stipules small, inconspicuous ; or divided. 

 Fruit lengthily oblong, about 2 cm. x 6 mm. 



18. stenocarpa. 



T 2 



