196 SPIR^A DOUGLASII. 
the old shoots, very dwarf-flowering specimens may be obtained. The flowers are 
of a rosy lilac colour, and are most numerously produced in dense, compound, 
terminal racemes. 
Many of the Spiraeas make handsome shrubs for a lawn, but on account of 
their deciduous character they should not be very largely introduced. A few 
choice species, however, may be planted with good effect. In the wilder parts of 
the garden, masses of them, with their white or red flowers, have a rich appearance. 
They will grow in almost any kind of soil. 
In common with other species, the present may be multiplied to a great 
extent by cuttings, which soon take root. It is also increased by layers. 
The specific title was bestowed by Sir William Hooker in his " Flora Boreali- 
Americana, r) in commemoration of Mr. David Douglas. 
