534 SPIRAEA 



Var. DUMOSA, * S. Watson (S. dumosa, Nuttall; Holodiscus dumosus, 

 Heller], A smaller growing and distinct variety 2 to 4 ft. high ; leaves 

 I to 2 ins. long, nearly as wide, silky white beneath ; flowers in erect 

 panicles. California, Oregon, etc. Probably a distinct species, now rare in 

 gardens. 



These two Spiraeas differ from all the rest here included in having an 

 indehiscent seed-vessel. 



S. DOUGLASII, Hooker, 



(Bot. Mag., 1.5151.) 



A shrub 4 to 6 ft. high, forming a thicket of erect stems, reddish, covered 

 when young with a very fine felt. Leaves narrow oblong, ij to 4 ins. long, 

 \ to i in. broad; coarsely and unequally toothed on the terminal part only, 

 dark green above, covered with a fine grey felt beneath. Flowers purplish 

 rose, produced in an erect terminal panicle 4 to 8 ins. high, very closely 

 packed ; flower-stalks and calyx grey-downy ; stamens pink, standing out 

 well beyond the petals; ovaries smooth. 



Native of Western N. America; discovered by David Douglas in British 

 Columbia about 1827, and first raised in the Glasgow Botanic Garden from 

 his seed. It flowers from the end of June to the end of July, and a patch 

 several feet across makes a rather striking display. The shoots that flowered 

 the previous summer should be pruned back in February or early March, 

 and the plants are all the better if broken up every few years as advised in 

 the introductory notes to this genus, and the soil enriched. It thrives 

 especially we-11 near water. It is allied to tomentosa, but differs in its smooth 

 ovaries, its longer more oblong leaves, and in flowering earlier. 



