194 



Lxx. rubiacej: (mEEN). 



[Psychotria^ 



Shoots green, glabrous. Peduncles ^ in. long . 3. P. setacea. 

 Shoots reddish, branny-puberulous. Peduncles 



1 in. long 4. P. Mannii, 



Leaves 7-9 in. long; lateral veins about 15-16 



pairs ; tertiary veins conspicuous .... 5. P. foliosa. 

 Inflorescence subsessile. Branchlets marked with de- 

 current ridges between the upper nodes .... 6. P. lophoclada. 

 Corolla-lobes each with a spreading linear horn nearly as 

 long as the tube. 



Glabrous. Leaves acuminate 7. P. comuta. 



Hairy. Leaves obtuse, not acuminate .... 8. P. humUis. 



11. Paniculatjs. 



Corolla-lobes flat, not keeled nor crested at the back. 

 Stipules bifid bidentate bisetose or bi-tricuspidate. 

 Stipules ^-^ in. long, not sheathing. 



Inflorescence pyramidal or corymbose, lax, pedun- 

 culate. 

 Tertiary veins not conspicuous. Epigynous disk 

 not sulcata. 

 Shoots bifariously hairy. Inflorescence slender 9. P. hifaria. 

 Shoots glabrous or puberulous, not bifariously 

 hairy. Inflorescence not slender. 



•Leaves almost veinless 10. P. umbellata. 



Leaves of nearly the same colour on both 



surfaces; lateral veins strongly marked 11. P. monticola. 

 Leaves paler beneath ; lateral veins slender. 

 Leaves coriaceous; lateral veins about 



7-8 pairs 12. P. calva. 



Leaves chartaceous ; lateral veins about 

 12-15 pairs. 

 Panicles axillary and subterminal ; 

 peduncle ^-| in. long. Leaves 



4^-6 in. long 13. P. leptophyUa,. 



Corymbs lateral, small ; peduncle ^ in. 



long. Leaves 7-8^ in. long . . 14. P. Doniana. 

 Tertiary veins conspicuous beneath. Epigynous 



disk ribbed and sulcata 15. P. konguensis. 



Inflorescence globose, sessile or shortly pedun- 

 culate, dense. 

 Style exserted. Leaves ovate-oval, some 



black-punctate 16. P. siibpnnctata. 



Style included. Leaves obovate-oval, not 



punctata 17. P. hrunnea. 



Stipules ^-| in. long, sheathing 18. P. longevaginalis. 



Stipules undivided, entire. 



Inflorescence subglobose or umbelliform, subsessile 

 or shortly pedunculate : flowers ^-\ in. long. 

 Stipules glabrous. Calyx subtruncate, shortly 

 toothed. 

 Leaves 3-9 in. long; lateral veins about 8-10 



pairs. A shrub. Flowers pentamerous . 19. P. gabonica. 

 Leaves 8-14 in. long; lateral veins about 12 



pairs. A tree. Flowers 5-6-merous , . 20. P. arhorea. 



Stipules shaggy inside. Calyx cleft 21. P. sciadephora. 



Inflorescence pyramidal or corymbose ; common pe- 

 duncles 1-2 in. long; flowers ^\ in. long. 

 Leaves obtuse, not acuminate. 



