Fig. I. — White Dead Nettle {Lamium album). 



FLOWERS. 



CHAPTER I. 



The flower of the common White Deadnettle 

 {Lamium album, Fig. i) consists of a narrow tube, 

 somewhat expanded at the upper end (Fig. 2), where 

 the lower lobe of the corolla forms a platform, on each 

 side of which is a small projecting lobe (Fig. 3, m). 

 The upper portion of the corolla is an arched hood 

 (Fig. 3 CO), under which lie four anthers (««), in pairs, 

 while between them, and projecting somewhat down- 

 wards, is the pointed pistil {st). At the lower part, 

 the tube contains honey, and above the honey is a 

 row of hairs almost closing the tube. 



Now, why has the flower this peculiar form .' 

 i B 



