14 IIOSACE^E. 



D Syncarpium elliptical 



12. 11. dolichocephalus. 



nn Syncarpium rounded 



+ Primary veins manifestly impressed 



above, elevate below 



13. R. euplilebopliyllus. 



++ Primary veins not manifestly im- 

 pressed above 



14. II. piptopetalus. 



15. R. sphcerocephalus. 



16. R. linear ifoliolus HAY. 

 /5. Stem, branches, petioles and peduncles not glanduloso-barbate. 



Leaves glaucous velutinous on the lower surface 



D Leaflets smaller 1-2 cm. long 



17. R. tripTiyllus.=R. parvifolius. 



np Leaflets longer usually 5 cm. long. 



A Kacemes terminal ...18. R. parvi-araliifolius. 

 ^^Cymes umbel-like axillary... 19. R. rarissimus. 

 Leaves not glaucous velutinous below. 

 D Leaves duplicately serrate 



^Branches and petioles villose 



20. R. tahvanianus. 



^Branches and petioles not villose 



+ Leaves quasi verticil late at the base of 



the flowering branchlets 



21. R. parvipungens=R. hirsutqpungens. 

 ++ Leaves simply alternate 



Leaves more densely glandular dotted, 

 carpels fewer than the following 



species 



22. R. glanduloso-punctatus. 



Leaves scarcely glandular dotted. ... 

 23. R. parvirosaefolius. 



