232 



BIRCH 



A Buds small, on long and very 

 slender whip-like twigs rough 

 with verrucose glands or lenticels, 

 and resinous-odorous or waxy. 

 Leaf-scar small, nearly ellipti- 

 cal, with 3 minute leaf -traces. 

 Pith small, irregular and green. 



^ Twigs more or less pendent, 

 with minute rough waxy glands 

 on them and on the small buds, 

 or with distinct lenticels. 



Fig. 119. Birch, Betula alba. The left-hand figure enlarged, p. 233 (D). 



