HARDY HERBACEOUS PERENNIALS. 



355 



Bindweed is one of the worst pests in a garden. C. Can- 

 tabrica and C. mmiritanicus are trailing species delighting 

 in a warm sunny corner, the one having pink and the 

 other beautiful soft-blue flowers. 



C. Cantabrica. Pink, trailer. Europe. 



C. mmiritanicus. Blue, trailer. Northern Africa. 



Coreopsis. — A handsome genus of composites, in- 

 valuable for the border. Some are annual, but the per- 

 ennial species are amongst the best of hardy plants. The 



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Fig. 429.— Colchicum autumnale. 



flowers have fringed petals, and vary in colour from 

 shades of yellow and orange to a dark velvety-brown. 

 Plants grow about 1\ to 3 feet high, the flowers being 

 produced at the ends of slender branches. The flowers 

 are very decorative in vases. &c. Propagation is effected 

 by seeds. 



C. grandtflora. Orange-yellow, 3 feet. South United States. 



C. lanceolata. Yellow, 3 feet. North America. 



C. verticillata. Bright-yellow, 2 feet. North America. 



Coronilla. — A genus of the Pea family, with glaucous 

 pinnate leaves, and flowers in compact heads. C. varia 

 is a beautiful species, of climbing habit, with flowers of 

 a lovely shade of heliotrope or lilac. These are produced 

 in great profusion, and form sheets of bloom suitable for 

 the shrubbery and rough parts of the rockery. C. cappa- 

 docica is a good yellow-flowered species of prostrate habit. 



C. cappadocica. Bright-yellow, trailer. Asia Minor. 



C. varia. Rosy-lilac, 2J to 3 feet. Europe (Britain). 



Cortusa. — A small genus allied to Primula. The 

 leaves are palmate, soft green, and hairy ; and the flowers, 

 which are reddish-purple, are produced in umbels. They 

 delight in shady places or crevices in the rockery. Pro- 

 pagated by seeds. 



C. Matthioli. Reddish, 6 inches. Europe, North Asia. 

 C. pubens. Pale-red, 4 inches. Transylvania. 



Corydalis. — A small genus, allied to Fumitory. The 

 flowers are pretty, mostly purplish, rose, and yellow, and 

 the foliage is delicately-cut and fern-like. A mixture of 

 peat and loam is the best to grow them in. The roots 

 are very brittle, and require careful handling when divid- 

 ing or transplanting. Seeds are slow in germinating. 



C. bulbosa. Dull-purple and white, 6 inches. Europe (Britain). 



C. capnoides. Sulphur-white, 1 foot. Europe. 



C. lutea. Yellow, 6 inches. Europe (Britain). 



C. nobilis. Golden-yellow, 1 foot. Siberia. 



Cram be. —A small genus of Cruciferse. C. cordifolia 

 is a handsome, large-leaved plant, producing tall branched 

 racemes of white flowers, and is very suitable for the wild 

 garden. C. maritima, the Sea-Kale, is also worth a place 

 in the herbaceous border. A rich soil suits them. Pro- 

 pagated by dividing the roots, or by seeds. 



C. cordifolia. White, 4 feet. Caucasus. 



C. maritima. White, 4 feet. Europe (Britain). 



C. orieutale. White, 4 feet. Orient. 



Crinum. — Several species and one good 

 hybrid of this essentially tropical genus are 

 sufficiently hardy to be grown in sheltered 

 positions in the open air in this country. 

 They must have plenty of sunshine, protection 

 from north and east winds, and a deep loamy 

 soil in which they will obtain a good supply of 

 moisture during summer. It is advisable to 

 cover the bed in which they are planted with a 

 3-inch layer of coal-ashes or similar protec- 

 tive material if there is danger of severe frost. 

 The bulbs should be planted with their bases 

 9 to 12 inches below the surface. Increased 

 by offsets and seeds. 



C. americanum. White, 2 feet. United States. 



C. longifolium (capense). Pink, 2 feet. South Africa. 



C. Moorei. Pink, 3 feet. South Africa. 



C. Powelli album (fig. 430). White, 3 feet. Gar- 

 den hybrid. 



C. Powelli rubrum. Pose-red, 3 feet. Garden 

 hybrid. 



Cyclamen. — Pretty dwarf plants with 

 roundish leathery leaves, sometimes beauti- 

 fully marbled, produced annually from nut- 

 like corms. They grow well in a mixture 

 of sandy loam and leaf-soil, and may be increased by 

 seeds, which should be sown as soon as ripe. For the 

 rockery, and for planting in rather sheltered places, espe- 

 cially under trees, they are admirable little plants. In 

 some parts of the country there are large quantities of 

 them naturalized in woods. 



C. africanum. Deep-rose, 3 inches. North Africa. 

 C. count, and vars. White to crimson, 3 to 4 inches. Greece 

 and Asia Minor. 

 C. europceum. Crimson, fragrant. Europe, &c. 

 C. neapolitanum. Rosy-pink. Europe. 



Cynara (Cardoon). — Valuable as a vegetable, and 

 sufficiently handsome to be used for the wild garden and 



Fig. 430.— Crinum Powelli album. 



rougher places. The leaves are large, silvery, and much 

 divided, the flowers bluish-purple in heads. They like 

 a good rich soil, and may be increased by seeds. 



C. Carduncidus. Blue, 6 feet. Mediterranean region. 

 C. Scolymus. Purple. Europe. 



