RUTACEÆ. 393 
to one carpel. Hmpleuridium, the flowers of which have four petals, 
but are dicecious, with the fruit of Hinpleurum; finally, Calodendron, 
with beautiful large flowers, much recalling by their perianth and 
diplostemonous androceum, those of Spiranthera and Dictamnus, but 
with a gynæceum exceptionally formed of carpels united into one 
ovary, with five biovulate cells, to which succeeds a five-celled and 
loculicidal capsule. 
IV. BORONIA SERIES. 
The flowers of Boronia’ (figs. 422, 423) are very analogous to 
those of the Diosmas of South Africa, regular, hermaphrodite, and 
generally tetramerous. The receptacle, usually convex, supports four 
imbricated or valvate sepals, free or 
slightly united at the base, four 
alternate petals imbricated or val- 
vate, and eight stamens, four of 
which, oppositipetalous, shorter, are 
sometimes sterile, while the four 
others have a two-celled introrse an- 
ther, dehiscing by two longitudinal 
Boronia serrulata. 


MEL DE : : : Fie. 422. Fra. 423. 
clefts. Within the insertion of their re 
Flower (2). Diagram. 
filaments, glandular or ciliate, often 
dilated at the apex, is seen a more or less thickened disk, entire 
or four-lobed, surrounding the gynæceum. ‘This is composed of 
four oppositipetalous, biovulate carpels, formed exactly like those 
It is the same with the capsular fruit, whose shells, 
with separable endocarp contain one er two seeds each. Under 
the coats of the latter a fleshy albumen is found surrounding an 
axile subcylindrical embryo. consists of small shrubs 
from Australia, principally the south-eastern regions. More than 
some fifty species’ are actually admitted. The leaves are opposite, 
simple or imparipinnate, sometimes trifoliolate, with folioles entire 
of Diosma. 
Boronia 

1 SM., in Zrans, Linn. Soc., viii. 285, t. 5—7. 
—GERTN. F., Fruct., iii. 156, t. 211.—A. Juss., 
in Mém. Mus., xii. 482, t. 22, fig. 26—DC., 
Prodr., i. 721. —Spacu, Suit. à Buffon, ii. 
338.—ENDL., Gen., n. 6004.—B. H., Gen., 291, 
989, n. 28.—H. BN., in Adansonia, x. 302.— 
Cyanothamnus Linpu., Swan Riv. Bot., 18. 
—Enpt., Gen., n. 6005.— B. H., Gen,, 292, n. 
29. 
2 Lasiut., Pl. Nouv.-Holl., i. 97, t. 124, 125. 
—SIEB., in Spreng. Syst., Cur. Post. 148.— 
Rercuz., Ic. Ærot., t. 73, '74.— Sweet, F1. 
Austral., t. 19, 48.—Linpr., Swan Riv. Bot., 
17; in Mitch. Trop. Austral., 298; in Bot. 
