GARDEN FLOWERS. 121 



dwarf herbaceous perennial, suitable to be grown on rock- 

 work, or among alpine plants. Loam and peat. Propa- 

 gated by division. Should have frame protection in winter. 

 C. Matthiola (Matthiola) ; 6 inches ; flowers red, in May ; 

 Austria ; 1596. 



CoRYDALis. [Fumariacese.] Pretty, hardy plants, of easy 

 culture, in common soil. The annuals and biennials, which 

 are the least important, may be sown in the borders in April 

 and June. The perennials are increased by division. 



C. aurea (golden) ; hardy biennial ; 6 inches ; flowers golden- 

 yellow, in May ; Nordi America. C. bulbosa (bulbous) ; hardy 

 tuberous perennial ; 6 inches ; flowers purplish, in May ; Eng- 

 land. C.fiavula (yellowish) ; hardy perennial ; i foot ; flowers 

 yellow, in June; Russia; 1838. C. /on^^i^ora {\ong-^o\\ered) ; 

 hardy tuberous perennial ; 9 inches ; flowers pale rose, in May ; 

 Altai ; 1832. C. lutea (yellow) ; hardy perennial ; i foot ; flowers 

 yellow, in May ; England. C. Marshalliana (Marshall's) ; hardy 

 tuberous perennial ; 6 inches ; flowers purple, in May ; Tauria ; 

 1824. C. nobilis (noble) ; hardy tuberous perennial ; i foot ; 

 flowers pale yellow, in May; Siberia; 1783. C. pcBonifolia 

 (paeony-leaved) ; hardy perennial ; i foot ; flowers purple, in 

 May; Siberia; 1820. C Sibirica (Siberian); hardy perennial ; 

 6 inches ; flowers yellow, in July ; Siberia ; 1810. 



CoRYLUS. [Cupuliferae.] The Hazel-nuts, or Filberts, 

 are mostly cultivated for fruit, and seldom for ornament, 

 except the purple foliaged variety. They are all of easy 

 culture in garden soil. Propagated by seeds, division, and 

 layers. 



CosMANTHUS. [Hydropliyllaceae.] Pretty hardy an- 

 nuals. Rich garden soil. Increased by seeds. 



C. Jiinbriatus (fringed) ; hardy annual ; i foot ; flowers white 

 and lilac, in June ; North America ; 1838. 



CosMEA. [Compositae.] Pretty half-hardy annuals and 

 perennials. Rich garden soil. The annuals increased by 



