202. XXXIN. ANACARDIACEZ, Ruus. 
united. short or 0; stigmas 2; fruit 2-celled, 2-seeded samarze, with 
a broad, orbicular margin.—Shrubs with 3—5-foliate leaves. Fis. 
cymose. 
P. rrirouiita. Shrubby Trefoil. 
Lws. 3-foliate, Ufts. sessile, ovate, short-acuminate, lateral ones inequila- 
teral, terminal ones cuneate at base; cymes corymbose; sta. mostly 4; sty. 
short.—An ornamental shrub, 6—8f high, Western States! rare in Western 
N.Y. Leaflets 3—4}’ by 1;—1}?’, the peduncles rather longer. Flowers white, 
odorous, nearly 3’ diam. Samara nearly 1’ diam. 
3. AILANTHUS. 
@ & & Sepals 5, more or less united at base; petals 5: 9 stamens 
2—3; ovaries 3—5; styles lateral ; fruit a 1-celled, 1-seeded samara 
with oblong margins; co stamens 10; Q ovaries, styles and samars 
as in %.—Oriental. Trees and shrubs with pinnate leaves. Fils. in 
panicles. 
A. GuanpuLésa. Desf. Tree of Heaven.—Lvs. glabrous, unequally. pinnate ; 
ifts. ovate or oblong-lanceolate, acuminate, shortly petiolulate, with one or two 
obtuse, glandular teeth each side at base, terminal one long-petiolate.—A tree 
of large dimensions, and with extremely rich and luxuriant toliage, native of 
China and Japan. Trunk straight, with a smooth, brown bark. Leaves 3—5f 
in length, with 10—20 pairs of leaflets and an odd one. Flowers in terminal 
panicles, greenish, perfecting seed in our climate.—The tree is of extremely 
rapid growth, and is becoming common in our streets and shrubberies. t 
Orver XXXIII. ANACARDIACE A.—Svumacus. 
Trees or shrubs, with a resinous, gummy, caustic, or even milky juice. 
Lvs. alternate, simple or ternate or unequally pinnate, without pellucid dots. 
Fis. terminal or axillary, with bracts, commonly diecious. 
Cal.—Sepals 3—5, united at base, persistent. é : é rate 
Cor.—Petals same number as sepals, sometimes 0, imbricate in estivation. 
Sta. as many as petals, alternate with them, distinct, on the base of the calyx. . 
Ova. i-celled, free. Ovule one. Styles3or0. Stigmas3. 
_ Fr. a berry or drupe, usually the latter and 1-seeded. 
Sept 41, species 95, chiefly natives of tropical regions, represented in the United States by the genus 
Rhus only. 
Properties.—These plants abound ina resinous juice, which is often poisonous, butis used as an indeli- 
ble ink in marking linen, and as an ingredient in varnish. Even the exhalations from some of the species 
are deemed poisonous. The Cashew nut is the product of a small tree of both Indies. When fresh the 
kernel is full of a milky juice, and has a most delicious taste, but the coats are filled with a caustic oil 
which blisters the skin, and kills warts. 
RHUS: 
Said to be from pew, to flow; because used in hemorrhage. 
Calyx of 3 sepals united at base; petals and stamens 5; styles 
3, stigmas capitate; fruit a small, 1-seeded, subglobose, dry drupe. 
—Small trees or shrubs. Leaves alternate, mostly compound. Flowers 
often by abortion 2 Sor 2 ES. 
* Leaves pinnate. 
1. R. cuasra. Smooth Sumach. ; 
Lws. and branches glabrous; ifts. 6—15 pairs, lanceolate, acuminate, 
acutely serrate, whitish beneath; fr. red, with crimson hairs.—Thickets and 
waste grounds, U.S. and Can. Shrub 6—15f high, consisting of many strag- 
gling branches, smooth, except its fruit. Leaflets about 3/ long, } as wide, 
sessile except sometimes the terminal odd one. Flowers in terminal, thyrsoid, 
dense panicles, greenish-red, 9 g. Fertile ovaries clothed with grayish down, 
which in the fruit becomes crimson, and contains malic acid (bi-malate of 
lime, Prof. Rogers), extremely sour to the taste. Jn. Jl.—The bark of this 
and other species may be used in tanning. The drupes dye red. Lands long 
neglected are sometimes overrun by this shrub. 
