GOOD TREES AND SHRUBS 235 



It is a noble-looking tree, with large, polished green leaves, and in 

 summer, bold, deliciously scented, cream-white flowers. Although 

 usually treated as a wall shrub, it is a success planted as an isolated 

 specimen on the lawn provided shelter from east winds is given. 



Negundo. See Acer. 



Nuttallia cerasiformis (Osolerry). Grows well in hungry soils. 

 It is a native of California, deciduous, bushy, and very free-flowering, 

 with small white flowers produced in pendulous racemes in February and 

 early March. 



Nyssa sylvatica. For the garden this North American tree should 

 not be overlooked. It succeeds best in moist soil and a sunny position, 

 when the wood becomes sturdy and well ripened. It is not conspicuous 

 for showy flowers, its decorative value resting almost entirely upon the 

 glorious autumn tints of the decaying foliage. 



Olearias. The Olearias form a small and pleasing group of New 

 Zealand evergreen shrubs. With the exception of the Daisy Bush (0. 

 Haastii), all require some slight protection during severe winters, that 

 afforded by a wall being usually quite sufficient. It is a stiff bushy 

 shrub, four feet or five feet high, with small thick leaves, and in mid- 

 summer a profusion of white fragrant flowers. It is a good shrub for 

 massing. 0. gunniana, a slender species, is particularly pretty when 

 bearing its small pure white blossoms. It is very free flowering, and 

 succeeds better against a wall than in the shrubbery, unless a favoured 

 spot is reserved for it. 



OzothammiS rosmarinifolius is a distinct and beautiful Austra- 

 lian evergreen shrub, with long slender growths, and small narrow 

 leaves. Its small flowers are white, produced freely, and remain attractive 

 for several weeks during summer. It should be planted in rich soil 

 and a sunny spot. 



PaiTOtia persica (Iron Tree). A rare deciduous tree from Persia, 

 succeeding best in a rather dry soil on a slightly raised mound facing 

 south. It is a low-growing, much branched tree, with green Witch 

 Hazel-like leaves turning to brilliant shades of crimson, purple, and bronze 

 yellow in autumn. Individually the flowers of the Iron Tree are small, 

 with crimson-tipped stamens, produced abundantly in February and 

 March while the branches are leafless. 



Paulownia imperialis is a noble tree, and under certain treat- 

 ment proves a valuable addition to the sub-tropical garden. Grown 

 naturally in the pleasure-ground, where growth is unrestricted, it makes an 

 imposing picture, its large leaves being quite distinct. Its sweet-scented, 

 violet-coloured flowers rarely come to perfection in these Isles, as they 

 appear early and nearly always suffer from late frosts. It grows about 

 forty feet high, and succeeds best in moist soil. When grown in the 

 sub-tropical garden it should be kept to a single stem, which should be 

 cut down close to the base in autumn, and in spring several growths will 

 break from the old stool. Allow the best to remain and remove the 

 others. Leaves produced on shoots treated thus are considerably larger 

 than those on trees left to grow naturally. 



Pa via. See ^Esculus. 



