TREES AND SHRUBS 



dark shining green above, dull yellow green below, 1-1 J ins. long, } in. wide; 

 petioles long ; stipules minute, caducous. Autumn tint pale yellow. 



A deciduous tree, 30-50 ft. ; Branches slender, spreading, somewhat pen- 

 dulous ; branch-lets red to greenish-brown; spines simple or trifid ; Ba?-k deeply 

 fissured ; Wood hard, strong, coarse-grained, durable, red or red-brown. 



Introduced from N. America, 1700; there reaches 140 ft. Generic name 

 in honour of Johann Gottlieb Gleditsch (1714-1786), Director of Botanic 

 Gardens at Berlin; specific name from Gr. tri, three, and akanthos, a prickly 

 plant ; said to be the only leguminous plant without root-tubercles of nitrifying 

 bacteria. 



REDBUD, Ccrcis canadensis. 



Gardens, shrubberies. April, May. An ornamental tree with leaves of a 

 very uncommon shape. It prefers a rather light, rich soil, doing best in a warm, 

 sheltered shrubbery, and in the north should have the protection of a wall. 

 The species are propagated by layers of strong shoots in September or October ; 

 or better still by seeds sown in light sandy soil in gentle heat in March, 

 transplanting seedlings outdoors in June. 



Floxvers red, papilionaceous, ^ in. long, in umbellate fascicles, less crowded, 

 4-8 together, pedicels longer than C. Siliquastrvm ; Calyx campanulate, 

 5-toothed ; Keel of Corolla longer than wings ; Stamens 10, free ; anthers 

 versatile ; Fruit a legume, thin, flat, pink or rose, 2-3 ins. long, ^ in. wide, 

 pedicels short. 



Leaves alternate, ovate, cordate at base, entire, acute or acuminate, petio- 

 late, petioles 2-5 ins. long, thick, glabrous, villous in axils of veins beneath, 

 rich dark green, 2-6 ins. broad ; stipules small, membranous, caducous. 



A deciduous shrub or small tree, 12-20 ft.; Branches stout; Twigs 

 slender, glabrous, angled ; Bark red-brown, fissured, scaly ; Wood hard, weak, 

 dark reddish-brown. 



Native of N. America; introduced 1730. Also called American Judas 



Tree. 



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