RUTACEZ. 405 
or five parted isostemonous biovulate ovary and drupaceous fruit. 
The leaves are alternate, compound-digitate, with one, two, or three 
folioles. They are consequently very nearly allied to Amyris, but 
present also close affinities with 7oddalia. 

VII. AURANTEA SERIES (Fr., Orangers). 
The Orange-tree (Citrus Aurantium) has given the French name 
to this small group, but it presents a degree of complication in its 
floral organization that does not permit of it being taken as the 
type. We prefer to study as such a genus like Zimonia' (tigs. 452— 
454), the flowers of which are regular and hermaphrodite, with 
convex receptacle. The calyx 
has five sepals free or united to 
a variable distance, and dis- 
posed in the bud in quincun- 
cial præfloration. The corolla 
is formed of five alternate pe- 
tals, imbricated in the bud. 
The stamens are ten in number, 
superposed, five to the divisions 
of the calyx, and five, shorter, 
to the petals. The filaments 
are inserted under a circular hypogynous disk, free, subulate, or more 
or less dilated below, and their anthers are two-celled, introrse, de- 
hiscing by two longitudinal clefts. The gynæceum is free, supe- 
rior, formed of an ovary with five (more rarely of two, three or 
four) oppositipetalous cells, surrounded by a style swollen at the apex 
into a stigmatiferous head, often articulated upon the ovary at the 
base, from which it is sooner or later detached. In the internal 
angle of each cell a placenta is seen supporting one or two descending 
ovules, collateral or superposed, with micropyle directed upwards 
and outwards. The fruit is a plurilocular berry, one or several 
Limonia (Glycosmis) cochinchinensis. 

Fra. 452, 
Flower (£). 
Fie. 453. 
Long. sect. of flower. 

1 L., Gen, n. 534.—J., Gen., 261.—LAMK., 
Dict., iii. 516 (part.); Suppl., iii. 440; Zz, t. 
353.—DC., Prodr., i. 535.—Spacu, Suit. à 
Buffon, ii, 251.— Enpt., Gen., n. 5501.— 
H. BN., Aurant. (De la Fam. des Aurantiacées 
(1855), thès. Fac. méd. Par.), 19, 33.—OLtv., 
in Journ. Linn. Soc., v. Suppl, 14, 27.—B. H., 
Gen., 303, n. 75.— Winterlia Drnnst., Hort. 
Malab., ii. 9 (ex ENDL.).—Hesperethusa RŒM., 
Syn. (ex Or1v., loc. cit.).—(Incl.: Glycosmis 
Corr., Triphasia Lour.). 
