ENCYCLOPADIA OF GARDENING. 
SPECIES OULTIVATED: O. oyrthaniflora, orange, spring, hybrid; Gardeni, 
orange-yellow, May, 18 in., S. Afrion; miniata, scarlet and yellow, spring, Natal; 
nobilis, red and yellow, July, S. Africa. There are numerous varieties of O. 
miniata which are superior to the parent species. 
Cloak Fern (Nothoclana distans)—See Nothloclena. 
Cloud Grass (Agrostis nebulosa).—See Agrostis. 
Clove Gillihower (Dianthus oaryephyling) See Dianthus. 
Clove-Pink (Dianthus caryophyllus).—See Dianthus. 
Club Lily.—See Kniphofia. ~ 
Club Moss (Lycopodium clavatum).—See Lycopodium. 
Club Rush porns nodosus).—See Scirpus. 
Nd hehehe ell-flower (Campanula glomerata)—See Cam- 
panula. 
Clustered Wax-flower (Stephanotis floribunda).—See Ste- 
phanotis. 
Cluster Pine-tree (Pinus pinaster).—See Pinus. 
Cnicus (Fishbone Thistle).—Ord. Composita. Hardy & half-hardy 
perennials. Orn. foliage. 
CULTURE OF HARDY SPECIES: Soil, ordinary. Position, sunny 
Ree Plant, autumn or spring. Increased by seeds sown outdoors 
in April. 
CULTURE OF HALF-HARDY SPECIES: Soil, ordinary. Position, 
ie in cool greenhouse, or ornamental beds outdoors in summer. 
lant, May or June. Cut off flower heads directly they appear if hand- 
some foliage be desired. Propagate by seeds sown } in. deep in light 
soil in temp. of 60° to 70° in Feb., or in Sept. in similar temp., keeping 
seedings in greenhouse during winter. All best grown as biennials. 
HALF-HARDY SPECIES: O. Casabone (Syn. Chamepeuce Casabone), purple, 
summer, leaves spiny, veined with white, 2 to 3 ft., S. Europe; 0. Diacantha 
(syn. Chamepeuce Diacantha), purple, summer, leaves green, veined white, ivory 
spines, 2 to 3 ft., Syria. 
HARDY SPECIES: O. spinosissima, yellow, summer, 3 ft., Europe. 
Cobzea (Cup and Saucer-plant; Mexican Ivy).—Ord. Polemonia- 
cee. Greenhouse & half-hardy climbing perennial. First introduced 
1792. 
CULTURE: Compost, equal parts loam, leaf-mould, & silver sand. 
Position, pots or beds in greenhouse, or against south or south-west 
walls, arches, or trellises outdoors in summer. Pot, March. Plant 
outdoors in June. Temp., Sept. to March 50° to 55°; March to Sept. 
60° to 70°. Water freely in summer, moderately other times. Propa- 
gate ordinary species by seeds sown } in. deep in light soil in temp. 75° 
in March; variegated species by cuttings of young side shoots inserted 
in sandy peat in temp. 75° in March or April. 
SPECIES OULTIVATED: QO. scandens, purple, summer, 10 to 30 ft., Mexico; 
scandens aurea marginata, leaves variegated with yellow. 
Cob-nut (Corylus Avellana var. grandis)—See Corylus. 
Cobweb House Leek (Sempervivum arachnoideum).—See 
Sempervivum. 
Cochineal Cactus.—See Opuntia. 
Cochlearia (Horse-radish).—Ord. Crucifere. Hardy esculent- 
rooted perennial. 
CULTURE: Soil, ordinary, deep, rich. Position, open or shade. 
Plant, Jan. or Feb., Sin. deep in rows 2ft. apart. Sets (roots) to be 
Zin. long, with Lin. of crown pared off. Re-plant every third year. 
Lift for use as wanted. Propagate by seeds sown outdoors in July; 
cuttings of roots at planting time. 
SPECIES CULTIVATED: O. armoracia, white, May, 3 ft., England. 
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