92 



FOUNDATIONS OF BOTANY 



of small, scaly grains. Flowers in a 4-10-flowered simple raceme, not 

 fragrant. Spurs of the corolla longer than the pedicels; corolla 

 mostly white with a yellowish tip. Rich woods, common. 



2. D. canadensis, DC. SQUIRREL CORN, WILD HYACINTH. A 

 low, stemless perennial, with scape and leaves much as in No. 1, and 

 with small yellow tubers looking like grains of corn scattered along 

 the underground shoots. Corolla only heart-shaped at the base, 

 whitish or flesh-colored, very fragrant. Rich woods. 



3. D. spectabilis, DC. BLEEDING HEART, EAR DROPS. Stems 

 branching, recurved. Leaves large, twice compound in threes, the 

 divisions rather broad, like those of the common peony. Racemes 

 long, drooping, many-flowered. Flowers large, heart-shaped, bright 

 pink. Cultivated from China. 



VI. ADLUMIA, Raf. 



A delicate climbing biennial. Leaves thrice-pinnate, cut- 

 lobed. Sepals 2, very small. Petals 4, all united into a corolla 

 which is slightly heart-shaped or 2-knobbed at the base, remain- 

 ing as a spongy covering over the small, few-seeded pod. 



A B 



FIG. 12. Flower of Dicentra. 



A, view of flower partly dissected ; p, the larger outer petals ; p', the spoon- 

 shaped inner petals ; , floral diagram. 



1. A. cirrhosa, Raf. MOUNTAIN FRINGE, ALLEGHANY VINE. 



Climbing several feet high by the leaf-stalks. Flowers pinkish- 

 white. Rocky hillsides, often cultivated. 



