98 



KEY AND FLORA 



5. P. nudicaule L. Iceland Poppy. A delicate but rough-hairy 

 perennial plant. Leaves all basal, pale, pinnately cut. Flowers yellow- 

 orange or white, borne singly on rather slender, hairy scapes. Culti- 

 vated from Europe. 



V. 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, re- 

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



1. A. fungosa Greene. Mountain Fringe, Allegheny Vine. 

 Climbing several feet high by the leafstalks. Flowers pinkish- 

 white. Kocky hillsides, often cultivated. 



VI. DICENTRA Bernh. (BICUCULLA) 



Smooth, delicate herbs, with watery juice. Leaves compound 

 in threes and iinely cut. Flowers racemed, nodding. Sepals 2, 

 small and scale-like. Petals 4, slightly united to form a heart- 

 shaped or 2-spurred corolla (Fig. 17), the inner pair spoon- 



B 



Fig. 17. Plower of Dicentra 



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

 shaped inner petals. B, floral diagram. (After Le Maout and Decaisne) 



shaped, inclosing the stamens and pistil. Stamens 6 ; the 

 filaments somewhat united into 2 sets, and the anthers in 2 

 sets close to the stigma. Stigma 2-crested. Pod 10-20.-seeded. 



