130 ROSE FAMILY 



Spiraea arguta Z a b e 1 1884 Spiraea 



A shrub 1-1.5 meters (3-5 ft.) high, with arched branches, ends of 

 branches very slender, beset with prominent buds which remain unopened 

 on account of the twigs dying back 5-15 cm. each year; leaves oblanceo- 

 late, narrowed towards the base, acutish at the apex, serrate above, the 

 middle, glabrous on both sides, 1.5-3 cm. long, .5-1 cm. wide; umbels 

 very numerous, each with a few scale-like leaves at its base, flowers 2-5 

 in each umbel, white, flat, 8-11 mm. broad, pedicels smooth, 1.2-1.5 cm. 

 long ; follicles smooth : arguta, bright. 



Of garden origin, being a hybrid between S. Thunbergii and S. 

 multiflora. It blossoms a few days earlier than S. Van Houttei, 

 and before the foliage is much developed. The umbels are. very closely 

 crowded so that in full bloom the branches are one mass of flowers. 



Spiraea Bumalda B u r v e n i c h 1868? 



A more or less erect shrub, about .5 meter (1-2 ft.) high; bark brown, 

 striped ; young shoots with, small ridges running from the base of the 

 petiole; leaves ovate-lanceolate, sharply and mostly doubly serrate, nar- 

 rowed towards the base, acute at the apex, dark green above, paler beneath, 

 glabrous on both sides, 2-8 cm. long, 1.2-2 cm. wide; flowers numerous, 

 in corymbs, whitish to pink; follicles diverging when ripe. 



Of garden origin, a hybrid between S. j a p'o n i c a and S. a 1 b i f 1 o r ar 

 Numerous forms or varieties are cultivated, among which the following is 

 probably the most commonly planted within the state. 



Spiraea Bumalda var. Anthony Waterer 



Low compact shrub, flowers pink-purple, very numerous in compound 

 cymes. Most of the branches kill back almost to the ground in the winter. 

 but it renews itself very rapidly from the basal parts and bears the flowers 

 on the season's growth. Flowers in July and Aug. 



Spiraea salicifolia Linne 1753 Meadow Sweet 



Erect shrub .3-1.2 meters (1-4 ft.) high, bark of branches smooth, 

 yellowish brown or grayish, peeling slightly on main stems; leaves 

 oblanceolate to obovate, rounded or sharp-pointed at the apex, tapering 

 towards the base, finely serrate, glabrous on both sides, sometimes a few- 

 scattered hairs on the veins beneath, 4-7 cm. long, 7-20 mm. wide (on 

 young shoots much larger) petioles 3-5 mm. long; inflorescence a terminal 



