MAPLES 155 



Acer platanoides. Norway Maple (Fig. 72). Bud- 

 scales several, shining, tough and keeled, green or olive 

 at the base and red or red-brown above ; finely ciliate. 

 The leaf-bases tend to be prominent at the apex of the 

 twigs, which are polished, and of various shades of red, 

 brown or greenish (olive-green to yellowish red-brown). 

 Lenticels small and scattered. 



The small lateral buds appressed to the twig and flat on 

 that side ; end bud fairly large, about 1 cm. long. Leaf- 

 cushions evident, but not prominent. Leaf-scar shallow, 

 V-shaped, with 3 distinct leaf-traces (Fig. o9yand g). 



Schneider points out that A. platanoides can be distin- 

 guished from A. pseudoplatanus by its leaf-scars, which 

 unite end to end round the twig ; but Henry had shown, 

 in 1846, that the bud-scales of A. campestre, which are 

 leaves, present the same peculiarity. Pith whitish, round. 

 Branches becoming grey and fine-fissured ; bark fissured, 

 not scaly as in the Sycamore. 



ft Lateral buds standing off at an angle, ovoid- 

 pointed ; bud-scales yellowish green, with 

 blackish margin and apex. No white latex. 



Acer pseudoplatanus. Sycamore (Fig. 73). The large 

 terminal bud is usually flanked by two small ones. Scales 

 yellowish green bordered and pointed with black. The 

 leaf-scars are shallow, V-shaped, or crescentic, and the leaf- 

 bases not prominent. Twigs brown or grey. In many 

 respects like A.p)latanoides, but the bud-scales olive-green 

 with a deep brown border, slightly hairy at the margins 

 and tip, and the leaf-scars do not meet round the 

 twigs. The latter yellowish or greyish green to brownish 

 yellow, polished, with numerous lenticels. Pith large, 

 round, white. Branches grey to slate-coloured. Bark 

 scaly. 



