AILANTHUS 83 



Small tree or shrub, 10-25 ft. high, 2-6 in. diam.; leaves of 3 leaflets, 

 6-15 cm. long and wide, leaflets ovoid to obovate, margin finely wavy, 

 pointed, with more or less wedge-shaped base, smooth above when mature, 

 sparsely hairy below, petioles 3-10 cm. long; flowers appearing after the 

 leaves, whitish, 8-10 mm. wide; fruit a round yellowish samara with a 

 broad veiny wing, 2-2^4 cm. diam. ; trifoliata, three-leaved. 



Occasionally cultivated ; not known to occur in the state as a native : 

 LI-Fla-Tex-Colo-Ont. 



Wood yellow-brown, hard, close-grained, weight 52 lbs.; the bitter 

 bark is used to yield a tonic. Readily grown from seed if the latter are 

 planted as soon as they are ripe. 



Simarubaceae Ailanthus Family 



Trees or shrubs with alternate pinnate leaves, not glandular-dotted, 

 and bitter bark; flowers dioecious or polygamous, in axillary panicles or 

 racemes, sepals 3-5, more or less united, petals 3-5, stamens 2-10, ovaries 

 2-5, separate, or more or less united, styles 1-5; seeds usually solitary. 



A family of about 27 genera, # found in tropical and subtropical regions. 



Ailanthus Desfontaines 1786 Tree-of-Heaven, Ailanthus 

 (The Chinese name in classical form) 



Trees, or shrubs in northern climates, with alternate odd-pinnate 

 leaves; flowers in terminal panicles, polygamous, greenish; sepals 5, unit- 

 ed, petals 5, stamens 10 in staminate, 2-3 in pistillate flowers, pistils 2-5, 

 partly united; fruit elongate, winged, 1-seeded, 1-5 in each flower. 



A genus of 3 species, native to China and the East Indes. 



Ailanthus glandulosa Desfontaines 1786 



Tree, 20-50 ft. high, 6-18 in. diam., or a shrub with long club- 

 shaped twigs, 5-12 ft. high; leaves odd-pinnate, of 11-41 leaflets, 3-10 

 dcm. long, leaflets ovoid to lanceolate, margin entire or slightly wavy and 

 often with one or more blunt teeth at the base, long-pointed, rounded or 

 somewhat heart-shaped and oblique at the base, smooth or slightly hairy 

 above, 8-15 cm. long, 3-7 cm. wide, petioles sparsely hairy, 7-15 cm. long; 

 panicles appearing soon after the leaves, 15-20 cm. long; flowers greenish, 

 ill-scented, 3-5 cm. wide; samara oblong, fusoid, or spatulate, yellow- 

 brown, with netted veins over the central seed, 4-6 cm. long, 1-1^ cm. 

 wide : glandulosa, glandular, possibly in reference to the odor. 



