40 BUDS AND STIPULES 



Among the Magnoliaceai, some genera have stipules, 

 while in others they are entirely absent. In Dnmys 

 Winteri, for instance, they are replaced by some of the 

 outer leaves of the resting bud, which are reduced to 

 bract-like fleshy scales. The leaves are convolute, the 

 lower enclosing the upper ones. 



Again, in Kadsura (K. japonica) the winter-buds 

 are protected by the outer leaves, which are reduced to 

 scales, and appear to consist of flattened petioles, with 

 a membranous margin representing stipules, free only 

 at the tip. The true leaves follow the scales abruptly. 



Another very interesting case is that of Viburnum. 1 



We have in this country two wild species of this 

 genus one, Viburnum Lantana (usually known as the 

 Wayfariug Tree) (fig. ob) ; the other, Viburnum Opulus 

 (fig. 56). They are not rare in woods, especially in 

 chalky districts ; but, though very nearly allied, their 

 leaves are remarkably different. I extract the following 

 descriptions from Syme. 2 



Of V. Opulus he says : ' Leaves deciduous, stalked, 

 roundish in outline, three-lobed, with the lobes acu- 

 minate, coarsely toothed and ciliated, finely pubescent, 

 but not furfuraceous beneath. Petioles with adnate 

 stipuliform appendages in the form of one (or some- 

 times two) linear process on each side, a little above 



1 This is taken from a paper read by me before the Linnean 

 Society on February 20, 1890 (Journ. Linn. Soc. xxviii. p. 244). 



2 In Sowerby's English Botany, 3rd ed. iv. pp. 202 and 203. 



