ON STIPULES 



41 



the base.' There are, I may add, two or more honey- 

 glands at the base of the lamina of the leaf. 



Of V. Lantana he says : ' Leaves very shortly 

 stalked, without stipules, ovate-oval or elliptical-oval, 

 dentate-serrulate, deciduous, rugose, furfuraceous- 

 pubescent beneath, especially on the veins, at length 

 nearly glabrous.' There are no honey-glands. 



Fig. 55. Viburnum Lantana. 



Fig. 56. Viburnum Opulus. 



No attempt, so far as I know, has been made to 

 account for the difference in form of the leaf in species 

 so nearly allied ; for the presence of the honey-glands 

 in the one and not in the other ; nor to explain the 

 reason for the existence of the peculiar filiform stipuli- 

 form appendages, nothing exactly resembling which 

 occurs in any of our other forest trees, the nearest 



