FIG. i. Lainium album. 



FLOWERS. 



CHAPTER I. 



THE flower of the common White Dead nettle 

 (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, ;;z). 

 The upper portion of the corolla is an arched hood 

 (Fig. 3 co), under which lie four anthers (ad), 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 ? 

 . S B 



