1910] Hall: Studies in Ornamental Trees and Shrubs. 5 



is wanted, particularly if a light-green color is preferred. P. 

 tenui folium also may be trimmed into a narrow hedge, but is 

 more twiggy, less leafy, and of a darker green color. Both of 

 these two last-mentioned take very kindly to pruning, making 

 neat hedges generally superior to the much used privet and box. 

 For low hedges and for edgings the rambling, light-green and 

 glossy P. lieteropliyllum, a recently introduced and still rare 

 species, should be considered. 



The most fragrant Pittosporums are P. Tobira and P. undu- 

 latum.^ These are both sweet-scented, the fragrance resembling 

 that of orange blossoms, while the flowers of P. eriocarpum have 

 a very pleasing banana-like fragrance. 



For general yard and lawn planting, where only a shrub is 

 desired, any of the species here described may be used, except 

 only the tree-like species and the half-reclining P. heterophyllum. 

 Even such arboreous sorts as P. crassifolium make good shrubs 

 if well headed in, the pruning serving the double purpose of 

 keeping the plant within bounds and of causing it to throw out 

 an abundance of new foliage. In case a mass of gray-colored 

 foliage is desired, P. eriocarpum is by far the best. 



For reforestation purposes P. phillyraeoides is perhaps to be 

 recommended as of most importance because of its drought- 

 resisting powers. It would grow readily on any of our lower 

 ranges without attention but would need to be protected from 

 browsing animals in its early stages. P. tenuifolium and P. 

 crassifolium are among the most hardy species and could be used 

 throughout the coast counties of California. 



Propagation. 



The seeds of Pittosporum usually germinate readily, but in 

 California the rarer sorts are occasionally infertile. This is 

 probably due to the absence of cross-pollination, particularly in 

 those cases where the parent plant is the only one of the species 

 in the neighborhood. It is claimed by some that only the spring 

 crop of seeds of P. rhombifolium are fertile. P. phillyraeoides. 

 is perhaps the most difficult species to propagate in this way, but 

 it throws up numerous root suckers which may be separated from 

 the parent and transplanted. 



