WATSIDl WEEDS, 51 



the corolla have fallen, either protecting the growing 

 seed-vessel, or forming part of what people gene- 

 rally call the fruit itself. The latter we find to be 

 the case in the apple, the pear, the thorn, the fruit 



Fi&. 39. — Poppy-bud drooping before flowering, and casting off 

 two-pieced calyx. 



of these being partly composed of the enlarged 

 calyx. When a calyx falls off early, it is called a 

 deciduous calyx; when it remains till the fruit has 

 formed, it is called persistent. 



As yet, our calyces have been green or leaf-Uke 

 organs, more or less regular, and easy of recog- 

 nition. You must not, however, expect always to 

 find them bearing this palpable character ; they are 

 often very irregular in form, sometimes- in one 

 piece, sometimes in two, sometimes in more. 

 Neither is the calyx always green : of this we have 

 had some notice in the frequently deep-coloured 

 flower-cup of the wallflower, or yellow bivalve of 

 the gorse, though, in these instances, it preserves 

 its well-marked distinction from the brighter corolla. 

 But there are cases where, although the corolla 



