150 ZANTHOXYLACEA. AILANTHUS: 
Sub-ord. 2. AILANTHEE (Arn.) Flowers unisexual, regular. Calyx 
4-5-divided. Petals 4-5, alternate with the sepals: æstivation be- 
tween valvular and twisted. Stamens as many as the petals and alter- 
nating, or twice as many, about the same length: filaments inserted 
round the base of the torus, not arising from scales: anthers 2-celled, 
bursting longitudinally. Torus discoid, or 4-lobed and cupshaped. 
Ovaries several, distinct: ovules solitary in each cell, pendulous: 
styles very short, distinct, or slightly cohering at the origin of the 
stigmas: stigmas distinct, filiform, recurved, papillose. Carpels 3-5, 
distinct, indehiscent, drupaceous or samaroid, l-celled, 1-seeded. Al- 
bumen? a thin fleshy plate, closely adhering to the integument of the 
seed, and resembling an inner coat. Embryo straight: radicle supe- 
rior, short: cotyledons fleshy.— Trees or shrubs. Leaves alternate, 
exstipulate, equally or unequally pinnated, without pellucid dots. 
In Ailanthus the samara might almost be called a membranaceous drupe, the 
part around the seed being hard and nearly bony. This group includes Brucea, and 
perhaps Eurgcoma, Jack. 
Ill. AILANTHUS. Desf. 
Polygamous. Calyx 5-cleft. Petals 5. Torus produced upwards into à 
5-plaited waved annulus.—Marz. Stamens 10, and with the petals inserted 
on and around the base of the torus. Ovaries rudimentary, 5 or fewer, mi- 
mute, distinct, inserted between the plaits of the torus.—Frw. Stamens 
partly abortive. Ovaries 3-7, distinct, compressed. Styles from a notch on 
the inner angle of the ovaries, distinct at the base, imperfectly united at the — 
apex, bearing at the point of union about 5 (3-7) long stigmas. Samaræ se- 
veral, usually from abortion fewer than the ovaries, oblong, compressed, 
membranaceous, reticulated, swollen and 1-celled in the middle. Seed com- 
pressed. Cotyledons semi-lenticular.—Tall trees. Flowers fascicled, in large 
branched terminal panicles. j 
481. (1) A. excelsa (Roxb. :) leaves abruptly pinnated, young ones tomen- 
se, old ones glabrous ; leaflets coarsely toothed at the base, with an incon- 
spicuous gland beneath at the points of the teeth: petals almost glabrous 
within : filaments glabrous, shorter than the anthers : samaree linear-oblong.— 
Roxb. Cor. 1. p. 24. t. 23; fl. Ind. 2. p. 450: DC. prod. 2. p. 89 ; Spr. syst- 
1. p. 939 ; Wight! cat. n. 545. — ; 
From this A. glandulosa, Desf. differs by the petals being very woolly to- 
wards the base on the inside, and by the filaments much longer than the an- 
thers, flexuose, and hispid at the base. : 
t482. (2) A. Malabarica (DC.:) leaves abruptl pinnated ; leaflets quite 
entire: samare broadly-linear, rounded at both ends.— DC. prod. 2. p. 89.— 
Rheed. Mal. 6. t. 15. : 
We have every reason to suspeet that Rheede's figure is extremely incor- - 
rect, and that this species, founded on it, is the same as the last. to 
Rheede's descriptions, they are, as is well known, often faulty even when 
the plates are good, so that, in the present instance, no reliance can be place 
on the carpels being united half way up, * lateribus carne intermedia termin! 
et pauca .conglutinatis." i ; 
