VINE 189 



are distichous witli a slight displacement to one side. 

 The bud-scales are stipules. 



The Vine bears two kinds of shoots, long shoots and 

 dwarf-shoots, and considerable differences in detail occur 

 according as the former bear leaves and flow^ers or flowers 

 only. 



Taking the case of a non-tlowering shoot. It begins 

 with two small basal scales close together, one on either 

 side of the axis, then come a large number of foliage 

 leaves, alternate and distichous : there may be as many 

 as 40 of these, each with a dwarf-shoot bud in its axil. 

 The lowest 3 5 appear without tendrils, thence onwards 

 (with considerable regularity, though not without excep- 

 tions) of every three nodes the lower two bear each a 

 tendril and a leaf, while the third bears a leaf only, so that 

 the tendrils appear in alternate pairs and each opposite a 

 leaf. 



Each bud in the axil of a leaf on the long shoot begins 

 with a lateral scale, the margins of which overlap an ap- 

 posed leaf with its two stipules : the latter in turn overlap 

 a similar leaf with its two stipules, opposite which leaf is 

 a tendril, and so on in distichous order. In the axil of 

 the lateral scale we began with is another bud, this time 

 that of a long shoot. 



The Planes (Flatanus) have also practically distichous 

 leaves on the long lateral twigs (see p. 213). 



(2) Buds spirally arranged on the twigs, or at 

 any rate not simply distichous, or displaced 

 with respect to the leaf-scars. 

 [See note regarding the Birch, Vine, Ampelopsis and 

 Plane, on p. 188.] 



(a) Twigs armed with spines, thorns, or prickles, 

 (i) The spines originate in leaf-axils or 

 terminate the twigs of which they are 



