290 



Rubiacecs. 



1. Sarcocephalus. 



stigma entire or lobed ; fruit a capsule, a berry or a drupe, 

 2-10-celled, or of 2-4 dehiscent or indehiscent cocci; seeds 

 2-numerous, embryo various, in fleshy or horny endosperm. 



A very large Tropical Family of which 138 species are here included ; 

 particularly characteristic of the wet region. In the dry country only 31 

 species occur, and of these 11 only are restricted to it; Adina and 

 Scyphiphora (the latter a seashore plant) being the only genera so circum- 

 scribed. In our moist region, on the other hand, are found 107 species, 

 and 77 of these do not extend beyond it. These latter are pretty equally 

 dispersed over the low country and the hills, and 42 are confined to the 

 former and 35 to the latter. To the moist low country are restricted the 

 genera Uiicaria, Fergnsonia, Schizostigma, Byrsophyllum, Nargedia, 

 Scyphostachys, Gtiettarda, Dichilanthe, and Geophila, and to the 

 montane zone the genera Allceophania and Acranthera. 



Nearly half of our species, as many as 68, are endemic, and four 

 genera are peculiar to Ceylon : Leticocodon, Schisostigma, Nargedia, and 

 Scyphostachys. 



Ovules more than 2, usually numerous, in each cell. 

 Fl. crowded in dense globose heads (Nauclece). 

 Cal.-tubes fused into a fleshy mass 

 Cal.-tubes distinct. 

 Trees. 



Cal.-segm. linear 

 Cal.-segm. clavate . 

 Cal.-segm. o 



Cal.-segm. oblong, appendaged 

 Climber with hooked peduncles . 

 Fl. not in dense globose heads. 

 Fruit a capsule. 



Cor.-lobes twisted in bud .... 

 Cor. -lobes valvate in bud. 



Cor.-lobes with a tooth on each side 

 Cor.-lobes entire. 

 Cal.-segm. 5. 

 Cal.-segm. large, membranous ; cap- 

 sule dry, not compressed 

 Cal.-segm. small ; capsule coriaceous, 

 much compressed .... 

 Cal.-segm. 4, small 

 Cal.-segm. contiguous 

 Cal.-segm. distant. 

 Seeds numerous . 

 Seeds few 

 Fruit a fleshy berry. 



Cor.-lobes valvate (Musscendece). 

 Inflorescence terminal, cymose. 



One cal.-segm. often developed into a 



large leaf, rest deciduous . 

 Cal.-segm. equal, persistent . 

 Infl. terminal, capitate, surrounded by 



large involucre 



Infl. axillary; ov. 5 -celled. 



Shrubs 19. UROPHYLLUM. 



Creeping herb 20. Schizostigma. 



2. Anthocephalus. 



3. Adina. 



4. Stephegyne. 



5. Nauclea. 



6. Uncaria. 



7. Wendlandia. 



8. Dentella. 



9. Neurocalyx. 

 15. Ophtorrhiza. 



12. Hedyotis. 



13. Oldenlandia. 



14. Anotis. 



1 6. MUSS^NDA. 



17. Acranthera. 



18. Leucocodon. 



