204 ROSACEAE (ROSE FAMILY) 
their woody roots into the soil they require to be grubbed out. 
Seeding may be prevented and root-growth checked by close 
cutting in the hot “wood-sere” days ‘of July and early August. 
WILLOW-LEAVED MEADOW-SWEET 
Spire@a salicifolia, L. 
Native. Perennial. Propagates by seeds. 
Time of bloom: June to August. 
Seed-time: August to October. 
Range: Newfoundland to the Rocky Moun- 
tains, southward to Georgia and Missouri. 
Habitat: Moist meadows and swamps. 
Stems erect, slender, two to five feet tall, 
with smooth, yellowish brown bark; these 
stems are very tough and troublesome to 
mowing knives and scythes. Leaves firm, 
light green, smooth, or nearly so, lance-shaped, 
usually obtuse at apex, finely toothed, tapering 
at base to a short petiole. Flowegs in large 
terminal panicles somewhat more narrow and 
pyramidal than in the preceding species, the 
five white petals of the small blossoms nearly 
round; pedicels and calyx finely downy. 
The five tiny follicles smooth, two- to four- 
seeded. (Fig. 146.) 
Means of control the same as for S. latifolza. 
HARDHACK 
Fic. 146. — Willow- Spiréa tomentosa 
leaved Meadow-sweet 
(Spirea __ salicifolia). Other English names: Steeple-bush, Woolly 
Xt Meadow-sweet. 
Native. Perennial. Propagates by seeds. 
Time of bloom: June to August. 
Seed-time: August to October. 
Range: Nova Scotia to Manitoba, southward to Georgia and 
Kansas. 
Habitat; Moist meadows and swamps. 
