Mil. C. 13. CLARKE OX DIMORPHISM IN THE RUBIACE.E. 1G1 



separate ; the peduncled flowers (fig. 4) have the corolla-tube and 

 style very short, the stigma clavate with spiral lines. The small 

 fruits contain perfect seeds exactly resembling the seeds of the 



Fig. 3. 



Fig. 4. 



Diagrams of flowers of Randia aliginosa. Fig. 3, sessile-flowered, and fig. 4, 



peduncled-flowered variety. Both X 1| diam. • 



larger fruits. In this species all the peduncles are 1-flowered. But 

 in the closely allied section of Gardenia (called by Kurz the sub- 

 genus Bandioides) the fertile trees have the hermaphrodite flowers 

 sessile, solitary, producing large fruits; the other kind of trees 

 (called by Kurz hermaphrodite-sterile) have the flowers cymed 

 and usually sterile ; Kurz says always sterile ; but there is one 

 example at Kew in which the terminal flower of the cyme has 

 produced a fruit smaller than the typical fruit of the species (G. 

 erythroclada, Kurz), but apparently quite perfect. We are here 

 on the boundary^ line between dimorphism and dioicism ; but Kurz 

 says that in one closely allied species (G. sessiliflora, Wall.) the 

 two kinds of inflorescence and flowers occur on one tree. 



In the Bubiacese it frequently happens that the stigmas are 

 more or less combined or separate in the same species or indivi- 

 dual ; when combined, there is usually seen a straight, or nearly 

 straight, line on each side along which they separate upon the 

 application of a little pressure. But in other species of Bubiacese 



clavate stigma with convolute linear markings, as in fig. 4, 

 occurs ; and I do not know that such stigmas ever become bifid. 

 I should add that figs. 3 and 4 are copied from field-notes, and 

 are accompanied by specimens by which they can be verified in 

 the particular cases ; but I am by no means sure that the larger 

 (or rather longer) flower occurs invariably sessile, the smaller 

 flower peduncled, though, so far as I recollect, it is so. I fear 



a 



