GENERAL CATALOGUE. 



95 



Spiraea Thunbergii. Thunberg's Spiraea. D. Of dwarf habit and rounded, graceful form ; branches slender 

 and somewhat drooping-; foliage narrow and yellowish green; flowers small, white, appearing early in 

 spring, being one of the first Spirasas to flower. Esteemed on account of its neat, graceful habit. Forces 

 well in winter. 35c. 



S. trilobata. Theee-ldbed Spiraea. D. A vigorous grower. Three-lobed leaves ; white flowers. 35c. 



S. ulmifolia. Elm-leaved Spir-SIA. D. Leaves somewhat resembling those of the elm, and large, round 



clusters of white flowers in June. (See cut.) 35c. 

 S. Van Houttei. D. Without doubt the finest variety in the collection. At the flowering season in early June the 



plant is covered with a mass of large, white flowers, presenting a beautiful appearance. Hardy. (See cut.) 35c. 



Spiraea Van Houttei. (Reduced.) 



The Spiraeas flower in the following order, from the middle of May to the middle of August : (1.) Argula, 

 prunifolia fl. pi., Thunbergii. (2.) Niconderti, tenissima. (3.) chameedrifolia. (4.) Van Houttei, cratcegifolia, lanceolata, 

 lanceolata fl. pi., lanceolata robusta. (5.) ulmifolia. (6.) opulifolia aurea, crenata. (7.) Fontenaysii, salicifolia, sofbi- 

 folia. (8.) Billarcli. (9.) aricefolia. (10.) callosa, callosa alba, callosa superba, species japonica. 



