248 
CONVOLVULACEiE. 
Vernum. Leaves cordate, slightly toothed, with a notch at the 
apex (emarginate), the lobes formed by the cleft at the footstalk 
overlapping each other; flowers purple, short, the segments 
ovate and blunt; produced in March and April. 
A matter, worthy the attention of cultivators of these pretty 
plants, may be mentioned, without danger of incurring the smile 
of incredulity, in these days of novelty-seeking and wonder- 
producing, as to the possibility of producing hybrids. It seems 
to me perfectly feasible, and in all probability I shall attempt it 
next spring. The mingling of such forms as vernum with hederi- 
folium , or the latter with coum, or even per si cum, must surely 
produce something fresh; and thus the already great interest 
(when they are properly known) of this charming tribe may 
yet be increased, to the great delight of your humble servant, 
v P. H. D. 
CONVOLVULACEiE. 
(Continued from page 223.) 
The stove species of Ipomcea are principally climbers of ex¬ 
tensive growth, and bearing very handsome flowers, which create 
a truly splendid display when developed on healthy specimens. 
The most remarkable are such as Horsfallice, with blossoms, three 
inches in diameter, of the richest crimson ; Hardingii, producing 
flowers, equally large and elegant, of a delicate deep-pink and 
rose-colour; tyrianthina , very deep purple; batatoides, purple 
and red ; Purshii, rose-colour ; and pulchella, purple and violet. 
The last two are distinguished by a shrubby habit; the preceding 
being all tuberous-rooted climbers. They require to be kept 
dormant through the winter, and in spring, when they are re¬ 
potted, to be plunged into bottom heat, and kept growing in an 
elevated, moist atmosphere; the last particular being most 
essential, as, if continued in dry, warm air, they are speedily 
attacked by red spider, which, once established, will bid defiance 
to the cultivator’s most strenuous exertions towards their eradi¬ 
cation. The soil most suitable is composed chiefly of peat and 
loam, enriched with manure or lightened with sand, as may seem 
