Rauwolfia. 



LXXXIV. APOOYNACE^ (sTAPF). 



109 



Umbels contracted ; peduncles up to 1 in. 

 long; calyx 5-partite; segments very 

 broad, distinctly overlapping at the 

 base ; leaf-reticulation ratlier close, 

 distinct . . 



Umbels lax ; peduncles 2-3^ in. long ; calyx 

 less divided ; segments less overlapping 

 or not at all ; leaf-reticulation very 

 Lix, faint. 

 Blades lanceolate to oblanceolate, about 

 4 times as long as broad. 

 Secondary nerves 25-30 on each side, 

 subhorizontal, straight or slightly 

 curved ; calyx-segments slightly 

 overlapping at the base ; corolla- 

 tube 2.> lin. long 

 Secondaiy nerves 16-20 on each side, 

 oblique, curved ; calyx cup- 

 shaped, 5-toothed ; corolla-tube 

 1^-2 lin. long .... 

 Blades lanceolate-obiong or elliptic, 2-3 

 times as long as broad . 



5. R. ochrosioides. 



6. R. inehriai 



7. R. obliqui nereis. 



8. R. Gcefze 



If Young branches slender ; leaf whorls distant; leaves thinly membra nou?, acute 

 to caudate-acuminate ; flowers distinctly pedicelled, in small umbels or racemiform 

 cymes ; fruit a twin drupe, with the two halved connate to or beyond the middle, but 

 separated by a groove on each side, or quite free, or more usually (by abortion) a 

 simple, often asymmetric di'upe, scantily fleshy and often laterally compressed. 

 Loaves caudate-acuminate ; flowers on short pedicels in 

 usually paired racensiform or subscorpioid cymes ; 

 fruit halves (if both are developed) connate to 

 or beyond the middle, separated by a groove on 

 each side, strongly laterally compressed. 

 Branches 4-angular when ^oung, with more or less 



conspicuous decurrent raised lines 

 Branches terete, without decurrent lines. 



Peduncles rather stout ..... 



Peduncles filiform ...... 



Leaves acute or acuminate, scarcely ever caudate ; 

 flowers on slender, short or long pedicels at the 

 ends of the secondary or tertiary rays of a com- 

 pound umbel or in repeatedly dichotomous cymes 

 arranged in umbels ; fruit halves (if both are 

 developed) quite free, divaricate, compressed oi 

 not. 

 Drupes laterally much compressed, -l-o lin. long . 

 Drupes ellipsoid, 3-3 i lin. long. 



Inflorescence glabrous ; style glabrous 

 Inflorescence pubescent ; style villous ::t the 



base 14. i?. vomitoria. 



9. R. Mannii. 



10. R. Preussii. 



11. R. rosea. 



12. R. Cui 



13. R. mombasia) 



**Corolla-tube 6 lin. long ; mouth not villous ; lobes at 

 least ^ the length of the tube; stamens inserted 

 below the middle ...•••• 



15. R. rulkei 



