GARDEN FLOWERS. 147 



enough, these may be planted out in the open ground. 

 There are several varieties of the Common or Mead's Vir- 

 ginian Cowslip, differing in the size and color of their flowers. 



D. integrifolium (entire-leaved) ; hardy perennial ; 6 inches ; 

 flowers pale-purple, in May; North America; 1829. D. Media 

 (Mead's) ; hardy perennial ; i foot ; flowers rose-lilac, in May ; 

 Virginia ; 1744. 



DOG'S-BANE. See APOCYNUM. 



DOG'S-TOOTH VIOLET. See ERYTHRONIUM. 



DORONICUM. Leopard' s-Bane. [Composite:] Showy 

 hardy herbaceous plants, with large yellow flowers. They 

 are propagated easily by dividing the roots in autumn or 

 spring, and grow in any ordinary garden soil. Except for 

 the variation of the blooming season, there is scarcely dif- 

 ference enough in their appearance to render it necessary to 

 cultivate more than one species. 



D. AltaicTtm (Altaic) ; hardy perennial ; I foot ; flowers white, 

 in June ; Siberia ; 1783. D. Austriacum (Austrian) ; hardy per- 

 ennial ; i foot ; flowers yellow in May ; Austria ; 1816. D. Cau- 

 casicum (Caucasian) ; hardy perennial ; i foot ; flowers yellow, 

 in June ; Caucasus ; 1815. D. cordifolium (heart-leaved); hardy 

 perennial; i foot; flowers yellow, in May; Russia; 1838. D. 

 macrophyllum (large-leaved) ; hardy perennial ; 2 feet ; flowers 

 yellow, in July; Caucasus; 1828. D. Pardalianches (great); 

 hardy perennial ; a feet ; flowers yellow, in May ; England. D. 

 planlagineum (plantain-leaved) ; hardy perennial ; 2 feet ; flowers 

 yellow, in May ; south of Europe ; 1570. 



DORYCNIUM. [Leguminosae.] Hardy and half-hardy per- 

 ennial and sub-shrubby plants, of little beauty. Soil, com- 

 mon loam. Propagated by seeds. 



D. herbacettm (herbaceous) ; hardy perennial ; 18 inches ; flow- 

 ers white, in July ; south of Europe ; 1802. D. hirsutum (hairy) ; 

 hardy evergreen sub- shrub; 3 feet; flowers red and white, in 

 July ; south of Europe ; 1682. D. suffruticosum (sub-shrubby); 



