418 NATURAL HISTORY OF PLANTS. 
intense in the fresh state, recalls moreover a great many Diosmas 
and Zanthoxylons by its opposite, trifoliolate, punctuate-glandular 
leaves, and by its small flowers in cymes; but these flowers, very 
analogous to those of Hsenbeckia, are remarkable for their tetramerous 
type, valvate corolla, isostemonous androceum and carpels with free 
ovaries surrounded by a disk and each containing an ascendent 
subbasilar ovule with inferior and interior micropyle. 
The ovules are two in number, or still more numerous in the small 
subseries Dictyolomee, comprising two isostemonous genera: Dictyo- 
loma (figs. 478-483), consisting of American Quassias, with alternate 
Diclyoloma incanescens. 

Fic. 478. Fic. 480. Fie, 479. 
Flower (4). Flower, perianth removed, Long. sect. of flower. 

Fra. 481. Fig. 483. 
Fruit (2). Long. sect. of seed. 

bipinnate leaves, polygamous flowers, with four or five ovules in each 
free ovary, and capsular fruits, with seeds surmounted by a circular, 
membranous, veined wing; and Creoridium, an American shrub, with 
simple leaves and hermaphrodite, unicarpellary flowers, and two 
ascending seeds in the ovary; also (?) an Australian diplostemonous 
genus, Cadellia, where the leaves are simple and tasteless, and the 
free ovaries, from one to five in number, contain in the internal 
angle from two to four descending ovules. 
