ROSACEAE (ROSE FAMILY) 205 
Stems erect, two to four feet tall, woody, so hard 
and brittle as to nick scythe blades and break mowing 
knives, the bark red and clothed in rusty wool 
which readily rubs off. Leaves long ovate, unequally 
toothed, obtuse at apex, the base rounded or 
abruptly narrowed to a short petiole, smooth and 
green above but covered underneath with tawny or 
whitish wool. Flowers in dense terminal racemes, 
spire-like, deep rose-pink, sometimes a reddish purple, 
occasionally white. The roundish, pointed follicles 
are also woolly, filled with minute, brown seeds. 
(Fig. 147.) 
Means of control the same as for Meadow-sweet. 
ROUGH CINQUEFOIL 
:‘Potentilla monspeliénsis, L. 
Other English names: ‘Tall Five-finger, Norway 
Cinquefoil. ‘ 
P Native. Annual or biennial. 
Propagates by seeds. 
Time of bloom: June to  Fia.147.— 
September. Hardhack 
Seed-time: July to October. (Spirea  to- 
Range: Labrador to Alaska, mentosa). x4. 
southward to Georgia, 
Texas, and Mexico. 
Habitat: Dry soil; fields, meadows, and 
waste places. 
Stem one to three feet tall, stout, erect, 
rough-hairy, branching near the top, be- 
coming tough and woody with age and 
changing from green to a dingy reddish 
purple. Leaves alternate, palmately tri- 
foliate, the leaflets obovate, double- 
: toothed, tapering to the base, hairy on 
p both sides, the lower leaves petioled, the 
Fre. 148. — Rough UPPer ones sessile or nearly so; stipules 
Cinquefoil (Potentilla mon- leaf-like, lance-shaped, toothed or entire. 
speliensis). X}- Flowers in terminal cymose clusters, 
