THE GUELDER-ROSE 75 



of a pale brown or yellowisli colour. Whilst the 

 Wayfaring-tree shares with Roses and Willows the 

 somewhat uncommon characteristic of originating its 

 " periderm," or corky secondary bark, in its outermost 

 or epidermal layer of cells, in the Guelder-rose the 

 more usual method, the origin, that is, of the peri- 

 derm in the " hypoderm," or layer next below the 

 epidermis, obtains. The cork-warts or lenticels, the 

 points at which this formation of periderm originates, 

 are few and small. 



The terminal buds of the shoots are generally 

 aborted, their place being taken by two small slightly- 

 stalked egg-shaped lateral ones. These are smooth 

 and reddish-brown, with a slight stickiness, and each 

 is enclosed by two leathery scales fused together at 

 their bases. Three or five veins can be traced on the 

 inner surface of each of these outer scales, as in a leaf- 

 stalk, and three of them generally end in the glan- 

 dular tips which excrete the viscid secretion just 

 alluded to. When this pair of scales bursts open it 

 discloses a second pair, pale green, more membra- 

 nous in texture than the outer pair, five-veined, and- 

 also cohering in a tube below. Within these come 

 the true leaves, which are downy when young, but 

 become perfectly smooth on their upper surfaces later. 

 They are thin and tender in texture, and of a vivid 

 green, and are broad and palmately three-lobed, the 

 lobes being large, triangular, and coarsely and irregu- 

 larly toothed. The base of the leaf-blade is heart- 

 shaped, and at the top of the short leaf-stalk there are 

 two or more sessile honey-glands, often of a reddish 

 colour. On either side of the base of the leaf-stalk is 



