DESCRIPTIVE LIST OF FLOWERS. 171 
CONVOLVULUS,—Bnow-weep. 
(From convolvo, to entwine.} 
Convélvulus arvénsis.—This is a perennial from Europe, 
with small nearly white flowers. The leaves arrow or 
heart-shaped with acute lobes. Stems numerous, climbing ; 
on account of its twining propensity, covering bushes and 
fences in its neighborhood, it is called Bind-weed. In 
Britain it is one of the greatest pests to gardeners and 
farmers. It is worse than the Hedge Bind-weed ; for that, 
for the sake of climbing, confines its ravages to the bor- 
ders of the field and garden, while this wanders over the 
whole ground, and is with difficulty rooted out. And 
yet it must be acknowledged that this little red and white 
flower is extremely beautiful; and, if it were a little more 
modest, would, doubtless, be a general favorite. As it is, 
it must suffer the consequence of its impertinence, not on- 
ly in being avoided, but positively turned out. Like the 
Calystegias, notwithstanding its great beauty, it must not 
be encouraged in the garden. 
C. tricolor.—Dwarf Convolvulus.—This is C. minor 
of the catalogues; a native of Spain and Portugal; the 
flowers are often pure white, but sometimes variegated 
with blue and yellow, or blue and white; the most beau- 
tiful kind is a bright blue, fading by delicate gradations 
to a pure white in the centre. It resembles the blue at- 
mosphere, relieved by fleecy clouds on a fine summer day. 
“ When on high 
Through clouds of fleecy white, laughs the cerulean sky.” 
Nor is the form of this flower less beautiful than the 
color, either when spread out in full beauty to the mid-day 
sun, or when, at the approach of night, it closes its blue 
eye to sleep. The plant spreads out much in every direc- 
tion from the center, so that a bed of them, with the 
plants two feet distant from each other, will interlock, It 
