92 BULBS AND TUBEROUS-HOOTED PLANTS. 



as they flower well. They succeed well in a cold frame, 

 but must be protected against frost and water during 

 winter. They are increased rapidly by offsets. 



F. Ferrariola (F. anther osa). Flowers green and 

 brown. 



F. uncinata. A curious species; flowers green, 

 with a bright blue mark in the center. 



F. atrata. Very brilliant purple flowers. 



F. divaricata. Mowers purple and green. 



F. obtusifolia. This is entirely distinct from the 

 other species by the remarkable color of its flowers, and 

 its potato-like root. It grows about eighteen inches 

 high, and branches in the form of a bush. It flowers in 

 June and July, and the bulbs may be taken up in the 

 autumn and kept during winter like those of the 

 Tigridia, and planted out again in early spring. This 

 species is deserving of cultivation, from the great beauty 

 and profusion of its flowers. 



FLAG FLOWER. 



A popular name of the Iris. 



FLAME LILY. 

 See Pyrolirion. 



FLEUE DE LIS AND FLOWER DE LUCE. 

 See Iris. 



FRENCH TULIP. 

 The popular name of Tulipa sylvestris. 



FRITILLARIA. 



Guinea-hen Floiver. Checkered Lily. 

 All of the Fritillarias have drooping bell-shaped 

 flowers, with honey drops in the cavity of each petal. 

 This nectar is particularly abundant in the Crown Im- 

 perial, so much so as to drop if the flowers are shaken. 



