NOCTURNAL OR HAWK-MOTH FLOWERS 



corolla-tubes, and are sweet-scented. In the pink family there 

 are the sand-pink {Dianthiis arenaria), bouncing bet {Saponaria 



Fig. 70. Evening-Primrose. CEnothera biennis 



A hawk-moth flower 



officinalis) common along roadsides (Fig. 74), white lychnis 

 (L. album), and evening-lychnis {L. vespertina), and the 

 long-flowered catchfly {Silene longiflora), and the nodding 



151 



