LAMIUM ALBUM. 



CHAPTER V. 



COROLLIFLORJE. 



This subclass contains those dicotyledons in which the petals are 

 united together, at least at the base. 



CAPRIFOLIACE^i. 



THIS order, which contains five British genera, Adoxa, 

 Sambucus, Viburnum, Lonicera, and Linnaea, offers 

 remarkable differences, especially in relation to the 

 honey glands. Adoxa is a low, glabrous, light green 

 herb : the flowers, which are coloured like the rest 

 of the plant, secrete honey, which is exposed, and 

 accessible to all insects. Sambucus nigra (The Com- 

 mon Elder), on the contrary, secretes no honey. It 

 is nevertheless sweet-scented, and is visited by several 



