354 List of Shrubs 



Philadelphus. Mock Orange, misnamed Syringa and Jasmine, a 

 genus with some thirty species and a large number of varieties and 

 hybrids of tali to medium-sized shrubs, from Europe, Asia, and native; 

 hardy and easily propagated, vigorous growers, and apt to assume 

 rather coarse form, with broad, ornamental foliage and medium to large 

 flowers. For best form and flowering, severe cutting back after flower- 

 ing is essential, the flowers forming on the wood of last year. They are 

 adaptive and shade-enduring. 



P. coronarius Linn. (131), from southern Europe, a shrub of twelve 

 to fifteen feet, of upright habit, with creamy-white, strongly fragrant 

 (objectionable to some), medium to large, orange-like flowers (May), 

 in racemes, and sharply-pointed, bright green foliage. Varieties with 

 double flowers and variegated foliage, and of lower stature, exist; the 

 species is, however, best used for border planting. 



P. Gordonianus Lindl. (132), a native of our northwest, with scent- 

 less flowers in racemes, blooms in July. 



P. inodorus Linn, (grandiflorus) (133), of southern habitat, hence 

 not quite hardy, has round leaves and much larger, scentless flowers 

 (May). 



P. microphyllus Gray (134), from the Rocky Mountains, is a dwarf, 

 with slender, rigid branches, dense foliage of small leaves, and large 

 terminal, very fragrant flowers in threes. It is adapted for sunny, 

 dry sites, and excellent for rock gardens. 



STORAX FAMILY 



This family with small, open, bell-like, delicate flowers, as a rule 

 white, blooming early, contains seven genera, consisting mostly of 

 tropical species, three of which, however, furnish ornamental values for 

 northern use. 



Halesia (Mohrodendron). Snowdrop or Silver Bell Tree. Is a genus 

 of six or eight species, of which two are native through the South, in 

 nature growing into tree form. These are among the finest ornaments, 

 with their profusion of early clusters of delicate white, "silver-bell" 

 flowers two to four in a cluster, on long stalks, appearing with the 

 foliage; and their graceful form, with many long, slender branches, and 

 with rather large, light green foliage, making a pleasing round bush, 

 which is best used singly. They are adaptive to soils, prefer shade, 

 and are easily handled, but are only half hardy north of Philadelphia. 



