C0NV0LVULACE7R. 
223 
in Ipomcea ; the first has a slender habit and purple flowers, the 
second is of more vigorous growth, and has rich reddish-scarlet 
blossoms; they require to be grown in the stove with the treat¬ 
ment of tuberous Ipomceas , but while in flower should stand in 
the greenhouse, 
Ipomcea. This is, at the same time, the most extensive and 
beautiful genus of the order ; it contains near a hundred species, 
among which are hardy and half-hardy annuals, greenhouse and 
stove plants, both shrubby and climbing kinds ; the latter form 
is most usual, and from the varied treatment required under cul¬ 
tivation, it may be readily conjectured that they are found in 
numerous countries ; all the warmer parts of Asia and America 
abound with them, and some are found in Europe and Africa. 
l.tamnifolia , atropurpurea , leucantha , siberica, and lacunosa, are 
hardy-climbing annuals, handsome, and easy of culture I. sessi- 
liflora , rose; campanulata , purple and white ; violacea , dark purple; 
and rubro ccerulea , blue, tinged with red, are tender annuals : the 
last is well known, and highly esteemed as an ornament for the 
greenhouse in summer. The seed of these kinds should be sown 
in March, not earlier, in pans of light rich earth, plunged into a 
brisk bottom-heat, and when the young plants are two or three 
inches high, they should be potted separately, and continued in 
heat that a free development may ensue, for if any check is ex¬ 
perienced at this time, they commence flowering, and never 
afterwards grow freely ; such therefore as happen to produce a 
terminal spike of flowers, may be thrown away, as they never 
grow larger : this is no uncommon occurrence with very early 
plants, and therefore March is recommended in preference to the 
previous months. They should be duly shifted into larger pots, 
as their progress may seem to advise, and being well established 
on supporting frames, by the end of May are then fit to be 
brought into the greenhouse, where they continue to blossom 
throughout the summer, care being taken to keep them clear of 
insects, by frequent syringing and fumigating; a slight shade 
should be introduced between them and the sun, to preserve the 
brilliancy of their otherwise short-lived flowers, which, with a 
moderately damp atmosphere, will go far to preserve them from 
attacks of red spider, to which the entire order is very subject. 
{To be continued.) 
