SIMARUBACEAE, 113 
clusters or panicled; and small leathery capsules, each with I 
or 2 round black seeds. 
1. Prickles by leaf-bases large, deltoid-acuminate. Z. Bungei. 
Prickles not greatly dilated at base. 2. 
2. Flowers panicled: leaflets glossy, falcate, Z. Clava-herculis. 
Flowers clustered in the axils. Z. americanum, 
Family SIMARUBACEAE. Quassia Family. 
A rather small family of little economic importance; chief- 
ly known in temperate regions through the too-common use of 
the tropical-appearing ailanthus. 
AILANTHUS. Tree of Heaven. 
Loosely branched deciduous trees with rather smooth 
coarsely lenticeled bark; yellowish soft wood with rather large 
spring ducts, tangentially disposed summer ducts, and distinct 
medullary rays; stout twigs with homogeneous colored pith; 
half-round buds with 2 or 4 exposed scales, the place of the 
terminal represented by a large scar; alternate odd-pinnate 
large leaves with somewhat toothed leaflets bearing nectar- 
glands beneath on some of the teeth; small dioecious polypetal- 
ous panicled flowers; and elongated somewhat twisted samaras. 
1. Twigs prickly. A. Vilmoriniana. 
Unarmed. 2. 
2. Twigs finely pubescent. 3. 
Twigs glabrous, A. glandulosa pendulifolia. 
3. Fruit green. ; A. glandulosa. 
Fruit red. A. glandulosa erythrocarpa. 
Family MELIACEAE. Chinaberry Family. 
A small chiefly tropical family producing mahogany, the val- 
uable West Indian “cedar” or cigar-box wood; a few forms 
used for shade trees, 
CeDRELA. False Cedar. 
Deciduous rather smooth-barked trees resembling Ailanthus, 
with brown mahogany-like wood with large ducts crowded in- 
spring but small and fewer in summer, and fine medullary rays; 
stout twigs; large round colored homogeneous pith; alternate 
