FLOWERING TREES AND SHRUBS 161 



places it succeeds perfectly well. It has elegant foliage, 

 each leaf being 15 inches long, and divided into several 

 pairs of leaflets. The flowers are greenish-yellow. 



R. TOXICODENDBON. Poison Oak or Poison Ivy. North 

 America, 1640. This species is of half-scandent habit, 

 with large, trifoliate leaves, which turn of various tints 

 of red and crimson in the autumn, and loose panicles of 

 greenish-yellow flowers. It is quite hardy, and seen to 

 best advantage when allowed to run over large rockwork 

 and tree stumps in partial shade. The variety R. 

 toxicodendron radicans has ample foliage, and is suited 

 for similar places to the last. The leaves turn bright 

 yellow in the autumn. 



R. TRICHOCARPA. Japan, 1897. This is a tree of slender 

 growth, and is of no particular value in an ornamental 

 way. The leaves are unequally pinnate, and the flowers 

 inconspicuous. 



R. TYPHINA. Stag's Horn Sumach, or Vinegar Tree. 

 A native of North America (1629), and a very common 

 shrub in our gardens, probably on account of its spreading 

 rapidly by suckers. It is, when well grown, a handsome 

 and distinct shrub or small tree, with large, pinnate, 

 hairy leaves and shoots that are rendered very peculiar 

 by reason of the dense hairs with which they are covered 

 for some distance back. The dense clusters of greenish- 

 yellow flowers are sure to attract attention, although they 

 are by no means pretty. R. typhina viridiflora is the 

 male-flowered form* of this species, with green flowers. 



R. VENENATA (syn R. vernix). Poison Elder, Sumach, 

 or Dogwood. North America, 1713. This is remarkable 

 for its handsome foliage, and is the most poisonous species 

 of the genus. The flowers are green in loose panicles. 



All the Sumachs grow and flower freely in any good 

 garden soil, indeed, in that respect they are not at all 

 particular. They throw up shoots freely, so that increas- 

 ing the stock is by no means difficult. 



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