* 
COTYLEDON. 
169 
er ee 
CRASSULA. 
the open air in England, if protected 
from frost during winter. They 
have dark brown flowers, and are 
so seldom cultivated, that they 
| Navelwort. 
Succulent plants, with 
fleshy leaves, and yellow or red 
flowers, nearly allied to the House- 
leek. They should be grown in 
would not have been mentioned in | light earth, mixed with lime rubbish, 
the present work, had it not been 
to prevent them from being con- 
founded with Coryanthes, a genus 
of Stove Orchidacee, from the 
West Indies. 
Co'smea, or Co'smes,—Compo- 
site—Mexican plants, generally 
grown as annuals, but which have 
tuberous roots like the Dahlia, and 
may be treated like that plant: ‘The 
flowers are very showy, and of a 
reddish purple ; and the seeds, when 
the plants are grown as annuals, 
should be sown in March or April, 
in the open ground; or in autumn, 
if the young plants can be protected 
during winter. The plants will grow 
four or five feet high in any com- 
mon garden soil. 
Coronea'stER.—-Rosdcee.—-Small 
_ trees and shrubs, natives of Europe 
and India, formerly considered to 
belong to the same genus as the 
Medlar. ‘They are all well deserv- 
ing of cultivation in shrubberies, for 
their bright scarlet or black fruit, 
and their pretty white or pink flow- 
ers. The Nepal species, C. frigida, 
C. affinis, C. acuminata, and C. 
nummularia, are the most orna- 
mental. C. rotundifolia, and C. 
microphylla, also natives of Nepal, 
are remarkable for their thick leath- 
ery evergreen leaves, their snow- 
white flowers, and their profusion 
of bright scarlet fruit. Both the 
latter species form dwarf spreading 
shrubs, and are very ornamental 
for a lawn. All the species are 
hardy, and will grow in any com- 
mion soil; and they may all be pro- 
pagated by seeds, layers, cuttings, 
or grafiing on the common quince 
or hawthorn. 
Corron-Grass.— See Erropno'- 
RUM. 
Coryie'pon. — Crassulacee. — 
15 
or in a compost of peat and loam ; 
and the pots should be well drained. 
The ornamental species are all na- 
tives of the Cape of Good Hope; 
and they are propagated by cuttings, 
which should be laid on a shelf for 
a few days to dry before they are 
planted. ‘The European species are 
scarcely worth cultivating. The 
plant called Venus’s Navelwort does 
not belong to this genus, but to 
Omphalodes. C. sempervivum, Bieb., 
(Umbiiicus sempervivum, Dec.,) is 
one of the commonest species. 
Co'tuLa. — Composite. — Hardy 
and tender annuals, of which, C. 
atrea, L., the flowers of which are 
like little golden balls, is the only 
one worth cultivating. It will grow 
in any common garden soil, and re- 
quires to be sown in March, with the 
usual treatment of hardy annuals. 
Cow-1trcu.—See Mucu'\na. 
Cows.tire. — Primuldcee. — Pri- 
mula véris, the common Cowslip, is 
a well known British plant, which, 
when cultivated in gardens, should 
be grown in a loamy soil and shel- 
tered situation. 
CranEsBILL.—See GERA NIUM. 
Crare Myrtie.—See Lacer- 
STRZ‘MIA. 
Cra’ssuLa.—Orassuldcee.—Suc- 
culent greenhouse plants, natives of 
the Cape of Good Hope, with heads 
of red or white flowers. They 
should be grown in sandy loam, and 
lime or brick rubbish, and the pets 
should be well drained. Like all the 
Cape plants, all the kinds of Cras- 
sula should have alternate seasons 
of stimulus and repose. When they 
are growing, and about to flower, 
they should be well watered, at least 
once every day, though the water 
should never be suffered to stand in 
the saucer; and when the flowers 
