k 7 ] RUBIACEJS 49 



Again in genera like Vangueria, Plectronia, &c. we 

 Snd every stage of succulence of the carpels coming in 

 ;ogether with reduction of the seeds to two or even one. 



Fig. 53. Guettarda Pervilleana, transverse section of fruit (Bai). 



Two sets of cases now occur. In one the endocarp 

 "emains thin, and we have baccate forms, few or many 

 seeded, and in Musscenda, &c. we see the transition from 

 capsular to baccate forms in one and the same genus. 



In another set of cases the endocarp begins to harden 

 e.g. Isertia) and finally becomes a hard shell, and a series 

 )f many-seeded or many-stoned drupaceous forms appear 

 e.g. Alberta, Pyrostria, Guettarda (Fig. 53), &c. a 

 lifference being noted whether there are several bony 

 mdocarps each enclosing one seed, or a single but 

 :hambered bony mass with one seed in each of its 

 ihambers. When, as in Salzmannia, the seed is reduced 

 one in the bony endocarp we have a fruit indistin- 

 guishable from a Drupe, except in its origin from an 

 uferior syncarpous ovary, and by abortion of seeds. 



Finally we have several genera of Rubiacese forming 

 :ollective fleshy fruits {Iufructescences) as in Sarco- 

 ephalus, where they are baccate, and Morinda (Fig. 54), 

 vhere they are drupaceous. In Ourouparia, Adina, 



w. iv. 4 



