1910] Hall: Studies in Ornamental Trees and Shrubs. 45 



3, narrowly obovate, obtuse, tapering to a sessile base, entire, 1^ to 

 2 l /2 in. long, marked with minute oil-dots: flowers white, % in. across, 

 in forking terminal clusters: sepals and petals 5 each: stamens 10: pistil 

 solitary. Family Kutaceae. Mexico. Illustrations: PI. 10; HBK. Nov. 

 Gen. et Sp., pi. 513. 



Choisya ternata is perhaps the most desirable small shrub 

 now grown in California, one which has been thoroughly tested 

 in a variety of situations, and yet it is scarcely known outside 

 of a few parks and a limited number of private gardens. It 

 is exceedingly neat and trim in appearance, round-topped, and 

 the leaves are of that smooth, glossy texture which easily sheds 

 dust and keeps clean even through a long, dry summer. The 

 blossoms, comparable to those of the orange but scarcely frag- 

 rant, occur in abundance, five or six "crops" appearing each 

 year, at least when grown in warm situations near the sea. 

 The flowers appear in greatest abundance, however, during the 

 early spring months. Although a native of Mexico, it grows 

 only at considerable altitudes in that republic, and flourishes 

 in California both along the coast and in the interior, from 

 San Diego to San Francisco, and would undoubtedly do well 

 much farther north. It has been known to endure a minimum 

 temperatiire of 10 F. 



Choisya is recommended for small lawns and yards, espe- 

 cially for city lots and for interior courts. In Golden Gate 

 Park, San Francisco, it is used to good effect in masses, one 

 planting of some 200 specimens being especially pleasing when 

 in full bloom. This shrub is said to be grown in England as a 

 hedge plant, such hedges being as broad as high, round-topped, 

 and quite satisfactory whether in flower or only in foliage. 



Propagation is by means of cuttings taken between the 

 periods of bloom. Fertile seeds rarely form on cultivated plants, 

 and their importation is impracticable. Choisya was first de- 

 scribed from cultivated plants whose exact origin was unknown. 

 It has since been discovered in the vicinity of San Luis Tultit- 

 lanapa, near Oaxaca, and elsewhere in Mexico. 



