CLI 
COL 
a gentle hot-bed, and the young plants 
may either be potted to bloom in the 
greenhouse, or placed out of doors, in a 
warm situation. It is only, however, 
when grown very strong, that they ap¬ 
pear suited to this purpose, as, from 
the paucity of foliage, the beds too fre¬ 
quently look naked. 
CLITOKIA (Linn.) Nat. Or. Legu- 
minos(B. Yery handsome stove climbers, 
of graceful habit, the majority producing 
large highly-coloured flowers. C. ter - 
nateci is perhaps the finest, its lovely 
blue flowers receiving universal admira¬ 
tion. The whole of the perennial spe¬ 
cies succeed in rough peat full of fibre, 
strengthened with a small proportion of 
loam; the annual kinds require the or¬ 
dinary treatment of tender annuals. 
OLIVIA (Lindley.) Nat. Or. Ama- 
ryllidaceee. Clivia nobilis, the only spe¬ 
cies, is a robust growing plant, which, 
once established, is very prolific of 
flowers; it grows well in sandy loam, if 
allowed the warmest part of the green¬ 
house, or a cool shelf in the stove: its 
flowers are of a delicate flesh colour 
throughout the greater part of the tube, 
heightening to a deep red over the limb, 
the segments of which are bright green. 
It is increased by division of the roots. 
COILEA (Cavanilles.) Nat. Ord. 
Polemoniaceee. Each of the two species 
known of these plants are elegant fast 
growing climbers, which may be grown 
either m the conservatory or the open 
garden in summer, where, from their 
rapid development, they are particularly 
desirable for covering walls, arbours, or 
other objects of a similar nature. It is 
preferable to treat them as annuals; the 
seed should be sown in March, in light 
rich soil, on a gentle heat; the young 
plants should be potted separately into 
small pots, as soon as they can be handled 
with safety, using the same kind of soil, 
and, after being gradually inured to the 
temperature they are likely to be subject 
to in their after growth, may finally, 
when about a foot in height, be placed 
where they are to remain. It is seldom 
that seed is matured in the open air, but 
in a greenhouse or conservatory it is pro¬ 
duced abundantly. 
CCELOGYNE (Lindley.) Nat. Or. 
Orchidaceee. A genus of remarkably 
beautiful epiphytes, of varied habit and 
character, possessing also flowers of 
equally variable kinds ; the small grow¬ 
ing species, such as C. Wallichii and C. 
prcecox, should be grown on billets of 
wood, where their lovely high-coloured 
blossoms are seen to much advantage; 
the larger kinds of the habit of C. Gard- 
neriana, are better placed in pots, both 
because they require more nutriment for 
the development of their strong pseudo¬ 
bulbs, aild in consequence of their flower 
spikes having a pendent character. Be¬ 
ing natives of the warmest parts of India, 
the atmosphere in which they are grown 
should be high and moist through the 
summer, or while the plants are in an 
active state; the resting season com¬ 
mences about October, when a consi¬ 
derable reduction of both temperature 
and the supply of moisture should take 
place, and continue until the returning 
spring induces a fresh growth. The 
flowers of most of them are produced 
simultaneous with, or rather before, 
the new leaves, when a high tempera¬ 
ture is necessary, with a slight increase 
of moisture, reserving, however, the full 
supply until the development of the 
leaves takes place. 
COLCHICUM (Linn.) Nat. Order 
Melantliaceee: An ornamental genus of 
hardy bulbs, growing freely in rich loam; 
they are cultivated chiefly for their habit 
of blooming late in the autumn. 
COLEONEMA (Bautling.) Nat. 
Or. Rutacece. Yery pretty greenhouse 
plants, deserving attention in every col¬ 
lection ; for, though their flowers are in¬ 
dividually small, they are copiously pro¬ 
duced. The species delight in light 
sandy peat, and require an airy situation 
in the house. 
COLLINSIA (Nuttall.) Nat. Or. 
Rcrophulariacece. Handsome hardy an¬ 
nuals, producing a fine display for a long 
period, and, by successional sowings, 
may be had in flower through the whole 
of the summer; the seed merely requires 
to be sown where the plants are required 
to flower. 
COLUMNEA (Plumier.) Nat. Or. 
D 
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