RUTACEÆ. 391 
as Coleonema' (figs. 416-421), have flowers whose androceum pos- 
sesses two verticils. They are, more- 
over, regular, hermaphrodite and pen- Coleonema album. 
tamerous. The receptacle, slightly 
convex, or more or less concave, often 
bears five sepals, whose insertion is 
consequently either hypogynous or 
more or less perigynous, and the præ- 
floration imbricated. ‘The alternate 
petals, whose insertion is the same, are 
free, oboval, tapering below into a thick 
claw, hollowed within on the middle 
line of a vertical groove in which the 
superposed staminodes are found. The ae ai = ae ar 
etal, upper Flower, perianth 
præfloration is imbricated. The sta- face (22). taken away. 
mens are ten in number, superposed, 
five to the petals, and five to the sepals. These last alone are fertile, 
each formed of a two-celled introrse anther, dehiscing by two longi- 
tudinal clefts, surmounted by a small glandular swelling of the con- 
nective, often spherical. Within the insertion of the androceum the 
receptacle is thickened into a cupuliform disk, 
entire or five-lobed, varying in height. and situa-  Coleonema pulehrum. 
tion according to the form of the receptacle itself. 
The gynæceum, entirely or partly superior, 
is inserted towards the organic summit of the 
receptacle; it is composed of five oppositipeta- 
lous carpels, whose independent one-celled ovary, 
often surmounted by a dorsal horn, more or less 
prominent,’ contains two descending ovules, with 


superior exterior micropyle.’ Hach ovary is sur- Fig. 421. 
mounted by a style, inserted at a variable height Fruit (7). 
in the internal angle, uniting with the other 
styles to form an erect column with capitate, stigmatiferous apex, 
more or less distinctly five-lobed. The fruit is formed of five com- 
pressed shells, rugose, corniculated at the summit, the endocarp 
separating from the exterior layers at dehiscence ; each of these con- 

1 Barty, & WENDL., Diosm., 55, t. A.—Spacn, Suit. à Buffon, ii. 328.—A, Juss., in Mém. 
Mus., xii, 471, t. 19, fig. 17.—ENDz., Gen., n. 6016,—B. H., Gen., 289, n. 20. 
? Often thickened, glandular at the summit, 3 With very distinct double coat. 
