RUTACEÆ. 413 
with a not very thick mesocarp,' and hard stone, containing a small 
descending seed, the coats’ of which envelop a fleshy exalbu- 
minous embryo, with thick plano-convex* cotyledons, and short 
cubical radicle Q. amara is a native of tropical America. 
its specific name to the fact that all 
its parts are very decidedly and in- 
tensely bitter. The leaves are alter- 
nate, imparipinnate, glabrous, not 
punctuate, exstipulate, with a petiole 
and rachis developed on each side 
into wings in the interval of the 
leaves, which are opposite, entire, and 
articulate. The flowers’ are disposed 
in terminal racemes, simple, or more 
rarely ramified; each is situated in 
the axil of a bract, and its articulate 
pedicel bears two lateral bractlets. 
Inasecond species of this genus,’ re- 
cently discovered in tropical Western 
Africa, the leaves have a scarcely 
winged rachis; and the flowers, of a 
greenish yellow, have petals always 
expanded at anthesis, while the sur- 
face of the receptacle comprised be- 
tween the androceum and the gynæ- 
ceum takes the form of the trunk of a reversed pyramid, because the 
ten scales accompanying the staminal filaments impress ten corre- 
sponding faces upon the sides. 
In a certain number of American species, of which the genus 
Aruba’ has been made, the receptacular faces exist, as do also the 
It owes 
Quassia (Aruba) Cedron. 

Fra. 468. 
Long. sect. of drupe. 

1 The internal angle presents a vertical awn, 
base of the latter. A few small whole leaves 
towards the summit of which is seen the cica- 
may be distinguished in the gemmule, 
trice of the style. Below is found the cicatrice 
of the insertion of the carpel, a sort of tear ex- 
tending deeply as far as the endocarp. 
2 There are two, thin but distinct, although 
adhering to each other. 
3 They are equal and lateral, or more rarely 
unequal, one being within, and in this case 
smaller than the other. 
4 It has a truncate summit which scarcely 
extends beyond the surface of the cotyledons, 
and which appears as though encased in the 
5 Of a beautiful bright red. 
6 Q. africana H. BN., in Adansonia, viii. 
89, t. 8—Oniv., Fl. Trop. Afr., i. 312.— 
Simaba Africana H. BN., in Adansonia, vii. 
381. 
7 AuBL., Guian., i. 293, t. 115.—H. BN., in 
Adansonia, x. 317.—Simaba AUBL., Guian., i. 
400, t. 153.—DC., Prodr., i. 733.—A. S. H., 
in Bull, Soc. Philom. (1823), 129.— A. Juss., 
in Mém. Mus., xii. 515, fig. 45.—Spacu, Suit. 
à Buffon, ii. 376.—Envt., Gen., n. 3964.— 

