III.] 



POPPY. CAMPANULA. 



bottom, as one might perhaps have been disposed to 

 expect, but at the top. A good illustration is afforded 

 by the well-known case of the common Poppy 

 (Fig. 46), in which the upper part of the capsule 

 presents a series of little doors (Fig. 46, a), through 

 which, when the plant is swung by the wind, the 

 seeds come out one by one. The little doors are 



FIG. 46. SEED-HEAD OF POPPY (Palaver). 



protected from rain by overhanging eaves, and arc 

 even said to shut of themselves' in wet weather. The 

 genus Campanula is also interesting from this point 

 of view, because some species have the capsules 

 pendent, some upright, and those which are upright 

 open at the top, while those which are pendent do 

 so at the base. 



F 



