BLUE FLOWERS 151 



3. Leaves mostly opposite, flowers solitary or 

 few, axillary. 



SMOOTH RUELLIA (Ruellia strepens}. Acanthus family. 

 Max. ht. 4 ft.; flowers almost without stalks, i or 

 few, large; corolla (blue) tubular, with 5 spreading 

 lobes at end ; leaves long and pointed, stout stalked. 

 Rich ground. Spring, summer. Penn., South and 

 West. 



SKULL-CAP (Scutellaria galericulata) . Mint family. 



Ht. 1-3 ft.; stem square, slightly downy; calyx 

 and (blue) corolla 2-lipped; flowers solitary in axils 

 of upper leaves; leaves broadly lance-shaped, 

 almost heart-shaped at base, toothed. Wet ground. 

 Early summer-autumn. 



4. Leaves mostly opposite, flowers solitary or 

 few, terminal. 



BLUETS. INNOCENCE (Houstonia coerulea). Madder 



family. 



Ht. few inches; stems slender; flowers small, light 

 blue with yellow centre, generally terminal, soli- 

 tary; corolla with tube ending in 4 petal-like 

 divisions; leaves small, pointed. Grassy places. 

 Early spring to midsummer. 



FRINGED GENTIAN (Gentiana crinita). Gentian 



family. 



Max. ht. 2 ft.; flowers large, dark blue, solitary, 

 terminal; calyx 4-pointed; corolla (2 in. long) 

 with fringe; leaves lance-shaped, from rounded 

 base, without stalks. Low grounds. Late summer 

 and autumn. 



GENTIANA ANGUSTIFOLIA. Gentian family. 



Ht. ^-i ft. or over; flower large, solitary, terminal; 

 corolla of 5 pointed lobes, light blue; leaves linear. 

 Pine barrens. Late summer, autumn. New Jersey 

 and South. 



