Convolvulacee—Convolvulus. R17 
flowers. The centre of the flower is yellow, followed by a 
white band, and is bordered with deep blue in the common 
variety ; but there are several garden varieties variously striped 
with some or all of the above colours, and others in which 
violet enters. There is also a double-flowered variety. 
C. altheoides is a twining perennial species from the South of 
Europe, with silvery lobed or dissected leaves and delicate rose- 
coloured flowers borne in pairs. C. puwhéscens, syn. Calystégia 
pubéscens, is another twining species with hastate downy leaves 
and large flesh-coloured flowers. The variety in cultivation 
has very double flowers and is very showy, but hardly suitable 
for planting in a border on account of its running roots. It is 
reported to come from China. C. Dahirica has cordate leaves 
and handsome deep rose-coloured flowers. The species formerly 
referred to Calystégia have two large leafy bracts overlapping 
the calyx. 
2, PHARBITIS. 
The species included under this name differ bnt slightly 
Fig. 178. Pharbitis hispida. (} nat. size.) 
from the true Convélvuli. They are distinguished by having 
the stigma capitate or lobed, not divided into slender arms, and 
