66 THE VEGETATIVE SHOOT 



(*) Bud-scales black or dark purple. 



Rowan-tree or Mountain Ash [Fyrus Auciitaria Gaert.). Buds 

 large, often \ inch long or more. 

 (c) Bud-scales hairy all over. 



White Poplar (Pofulus alba L.). Young twigs covered with a 

 white, loose cottony film : older ones smooth, yellowish-grey : 

 buds plump and pointed. 

 Apple or Crah {Pyrus Malus L. ). Twigs partially hairy ; small 

 wood-buds on long shoots closely pressed to stem and triangular 

 in outline. In the wild or crab-apple short branches ending in 

 a "thorn " are present. 

 {d) Bud-scales smooth or hairy only at the tips or margins, 

 (l) Several buds crowded at the tips of the long shoots. 



Common English Oak {Quercus pedunculata Ehrh.). Young 

 branches greyish-brown, without hairs and furrowed. The 

 buds stand out from the stem, are yellow or chestnut-brown 

 colour, quite smooth, plump, and rounded at the tips. 

 Durmast or Sessile Oak {Quercus sessiliflora Salis.). Young 

 branches slightly hairy ; buds longer than the preceding, 

 and their scales tipped and edged with hairs, 

 (z) Long narrow-pointed buds, chestnut-brown in colour, and 

 covered with resin at tips ; twigs furrowed. 

 Black Poplar (Populus nigra L.). Bud-tips straight or 



pointing outwards. 

 Aspen {Populus tremula L. ). Tips of the buds pressed close 

 to stem. 



(3) Buds dark brown ; leaf-scar a narrow crescent. 



Pear {Pyrus communis L.). Twigs smooth, yellowish- 

 brown ; not hairy. In wild pear short branches terminat- 

 ing in " thorns " are present. 



Hawthorn or White Thorn {Crataegus oxyacantha L.), Twigs 

 greyish-purple or greenish-grey ; buds paler than the pear 

 and rounder; usually two together— one large, the other 

 smaller. Generally spiny branches are present at the side 

 of the buds. 



(4) Buds dark brown ; leaf-scar rounder, almost a semicircle. 



* Buds small and round. 

 Sloe or Blackthorn [Prunus spinosa L.). Young twigs 



smooth, greyish-brown; older ones black. Buds very 



small, usually two or three together. 



** Buds larger and conical. 

 Apricot {Prunus armeniaca L.). Young twigs greenish- 



