20 BRITISH WILD FLOWERS 



rose (52), grass of Parnassus (79), sundew (82), 

 bog asphodel (93), yellow and purple loose- 

 strifes, water violet (53), frog-bit (116), water 

 lily (Fig. 17), cotton grass, water crowfoot, marsh 

 cinquefoil (148), and gipsy wort are but a few. 



6. Lakes, Ponds, and Rivers 



yield some of the foregoing, along with others, 

 such as the lobelia, flowering rush (Plate 1 1), pond 

 weeds, marestail, and others. 



7. TJie SeasJiore and Estuary 



have a delightful flora of their own. It is 

 usually somewhat late, but includes sea holly, 

 horned poppy (160), viper's bugloss (51), sea 

 convolvulus (62), thrift, sea heath, campion, sam- 

 phire, aster, some beautiful thistles, the pretty 

 sea lavender (80), and the lovely little burnet 

 rose (151). This must suffice as a general 

 guide to the situations in which plants may be 

 found. We turn now to the important subject 

 of structure. 



III. THE STRUCTURE AND HABITS OF 

 FLOWERS 



I. General Observations 

 Flowers differ in many ways, and it 



is by 



Knki'f 



observing their differences of form, colour, habit, 

 and structure that we are able to arrange them 



