SIMAROUBACEAE 763 
S pen. Fla., Everglade Keys, and Florida Keys.—(W. I., Mes., C. A., S. A.)— 
Spr. — The light- -brown heart-wood is elose-grained, but en and light. 
2. PICRAMNIA Sw. Shrubs or trees. Leaf-blades unequally pinnate, 
the leaflets thickish. Flowers dioecious, spicate or racemose. Sepals 3-5, short. 
Petals 3-5, P white or greenish- 
white, or wantin Stamens 3-5, unap- 
pendaged. Ovary | 2-3-celled, not lobed: 
style very short. Fruit a berry.—About 30 
species, most abundant in tropical America. 
P. pentandra Sw. Shrub or small tree: 
s 5-7; blades elliptie, or rarely ovate, 
soid, 10—1 long.— ( BITTER-BUSH.) — 
Ham mmocks, Everglade Keys, Fla. and ae 
ida Keys.— I.)—Wint.-spr.—The heavy 
W. 
and hard wood, like the bark, contains a 
bitter principle. l 
3. AILANTHUS Desf. Trees. Leaf-blades unequally pinnate, the leaf- 
lets thin. Flowers polygamo-dioecious, paniculate. Sepals 5, short. Petals 5, 
valvate, much larger than the sepals, white 
lobed at the apex: style columnar. Fruit a 
cluster of 5, or fewer, samaras with the style- 
bases lateral.—About 3 species, Asiatic. 
> > 
bn 
gum. A 
j - 
cy ims: 
. pee j 
T. 
1. A. altissima Swingle. Tree becoming 30 
m. tall: leaflets 13-41; blades e is 
ye dpud -lanceolate, 7—1 g: as 
long, linear- elliptic, a in 
P St panicles, t eed in the middle. 
[ A. ndu s f 
TRE 
places, various provinces, U. S. and S Can. Nat. of China and cult.—Spr.-sum. 
4. ALVARADOA Liebm. Shrubs or trees. Leaf-blades unequally pin- 
nate, the leaflets thinnish. Flowers dioecious, borne in spreading or drooping 
racemes. _ Sepals 5, short, greenish. Petals 
2-3-celled, apically notched. Fruit oe 
—About 6 species, tropical Ameri 
A. d Liebm. Shrub or 21 
ree: leaves approximate at the ends of t 
branches “cafele numerous, the blades > 
long, those of the lateral a mostly 
elliptic © or oval: flowers numerous, slender- 
o n ovate, about 1 a m. long: 
ents pubescent: samara elliptic or 
snes -elliptie, 12.14 mm. long, ciliate, 
