20 



WAYSIDE WEEDS. 



coloured; and in the buttercup (Fig. 2) yellowish 

 in hue. Frequently the number of the sepals, or 

 'calyx divisions, corresponds to those of the corolla, 

 but not invariably, as we see in the poppy (Fig. 20), 

 in which there are but two divisions, and these 

 joined at the top, more or less completely. More- 

 over, this poppy calyx does not, as in the wallflower, 

 the chickweed, the violet, or the geranium, continue 



Fio. 19.— o, calyx or 

 flower-cup of Stitch- 

 wort; b, stamens. 



Fie. 20.— Expanding flower 

 of common Poppy, throw- 

 ing oiFcaIyx,<a. 



attached to the flower, but is cast off in the process 

 of floral expansion. 



Calyx, corolla, stamens, pistils — these, bear in 

 mind, are the parts of a perfect flower, which always 

 preserve the same relative positions within one 

 another. With the exception of the lychnis, al-. 

 ready noticed, you wiU find it so in every plant in 

 our Handful, To make sure, look at the bright 

 white, well-named starwort,- or stitchwort, which 



