BUBIACEJE. 



279 



island of Fernando-Po, with triangular intrapetiolar stipules, and 

 rather large flowers. 



Ixora (fig. 257-259), which has given name (Ixorece) to this group, 

 often has a flower very analogous to that of Coffea and a fruit with 

 two putamens. The calyx has four or five short teeth ; but in those 

 named Pavetta the divisions may be much elongated. In the latter 

 the style is very long, exserted, the upper extremity often tapering, 



Strumpjia maritima. 



Fig. 260. Flower (^). 



Fig. 261. Long. sect, of flower. 



whilst in the true Ixoras this extremity is generally divided into two 

 branches, ordinarily independent. The calycinal divisions are short 

 or nil in Mijonima which has two to four ovarian cells, the same 

 number of stylary divisions and as many putamens in the drupe. 

 These calycinal divisions most frequently fall early in Rutidea, whose 

 style tapers towards the summit, but the albumen becomes ruminate. 

 It is equally so in certain species of Pavetta, from tropical eastern, 

 continental and insular Africa, named Enterospermum, the leaves of 

 which become black by desiccation, and which have, moreover, a 

 variable number of ovules. When the true Ixora has only one in 

 each cell, there is ordinarily in the internal angle of the latter a 

 salient placenta, in which the ovule, incompletely anatropous, with 

 inferior micropyle, is more or less imbedded. In Enterospermum, 

 there are one, two, three or more of these placentary indentations 

 containing an ovule. It is the same in Tarenna, in which the number 

 of ovules may be still greater, and the albumen is continuous and not 

 ruminate ; they are from Oceania, tropical Asia and Africa. Among 

 the latter are Ixoras whose ovule becomes slightly descending instead 

 of ascending. The fact is much more frequent and more marked in 



