80 MELIACEAE 



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 sicales, 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, the large cordate leaf- 

 scars with about 9 bundle-traces; small dioecious polypetalous 

 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 

 valuable 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 puberulent twigs; large round finally colored homo- 

 geneous pith; alternate large low broadly heart-shaped leaf- 

 scars with 5 bundle-traces; no stipule-scars; round buds with 

 several exposed scales, the terminal bud present and broadly 

 conical; large odd-pinnate leaves with pointed serrate short' 

 stalked glandless leaflets; small whitish usually perfect poly- 

 petalous panicled flowers; and capsular fruit with winged seeds. 

 Leaves merely paler beneath. C. sinensis. 



Leaves glaucous beneath. C. serrata. 



