4^ Lxxxv. ASCLEPiADE^ (brown), [Csropegia^. 



hairs. — Perennial herbs. E-ootstock a tuber or a fascicle of thick fleshy- 

 roots. Stems erect or twining, herbaceous or succulent. Leaves 

 opposite or rarely absent. Flowers large or of moderate size, of singular 

 forms, solitary, in pairs, in umbel-like cymes or rarely racemose^ 

 lateral at the nodes, rarely terminal. 



A large genus of many species, found throughout the tropics of the Old World, 

 and in extratropical South Africa. The tubers of many species are eoten. 

 Corolla-lobes free at the tips. 

 Dwarf plants, stem not twining. 



Plowers 1-2 in. long in the dried state . , , 1. C 'pygmoeii'. 

 Flowers about ^ in. long in the dried state , • 2. C. pumila. 

 Stem twining or rambling among other plants. 



Corolla-tube distinctly pubescent or hairy out- 

 side. 

 Corolla-tube 3-5 times as long as the sepals. 

 Corolla-tube very distinctly narrowed above 

 tlie inflated base. 

 Corolla-tube curved, 5-6 lin. long . . 3. C. nigra. 



Corolla-tube straight, 8-9 lin. long . . 4. C. kroboensis^ 



Corolla -tube stout, of nearly equal diameter 



throughout Q. C, ringens. 



Corolla-tube not longer than the sepals, of equal 



diameter throughout, campanulate . . 5. C. loranthifiora. 



Corolla-tube glabrous outside ; lobes sometimes 

 pubescent. 

 Corolla- tube 2 lin. in diam. at the middle ; lobes 



witliout hair-like points . . . . 7. C. sinuata. 



Corolla-tube about 1 Im. in diam, at the middle ; 



lobes ending in hair-like points . . . 8. C. teniaculata. 



Corolla-lobes connate into a slender tube which ter- 

 minates in rt small globose-pentagonal head . . 9. C. distincta. 

 Corolla-lobes connate in the upper part for at least \ of 

 their length into an umbrella-like canopy; stem 



erect, not twining 43. C. medoensis. 



Corolla-lobes connate or cohering at their tips only. 

 *Stem twining or rambling among other plants. 

 fLeaves quite glabrous on both surfaces, but 

 sometimes ciliolate on the margin ; stem quite 

 glabrous in. all the specimens examined. 

 Peduncles ^-4 in. long, and together with the 

 pedicels glabrous. 

 Flowers raceraosely arranged along a long 

 peduncle with distant nodes. 

 Flowers solitary; corolla-lobes 6-7 lin. 



long 34. C, racemosa. 



Flowers in pairs or fascicles ; corolla-lobes 



3 lin. long . . . . . 20. C. PerrottetU, 



Flowers 1-many, subumbellate or crowded at 

 the end of the peduncle, not distant. 

 Corolla-tube ovoid-inflated at the base, then 

 constricted, and with a long fusiform 

 inflation at the middle / . • 24. C.fusiformis. 

 Corolla slightly or very distinctly inflated 

 at the base or basal half only. 



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