196 CRACK WILLOW. ROWAN 



^(^ Leaves not silky pubescent 

 nor white. Twigs fragile 

 at the articulations, 



Salix fragilis, L. Crack Willow. Very like S. alba 

 in size and habit, but more cross-branched, and the shoots 

 and leaves not silky. Its name is due to the marked 

 fragility of the twigs, which dislocate at the insertions 

 very easily, a peculiarity not shown by S. alba. 



AA General hue of stem and 

 brandies dull slate colour or 

 deep grey. Ridges of the 

 fissured bark not prominently 

 scaly. Leaves not lanceolate; 

 flowers rosaceous, in corymbose 

 inflorescences. Fruits fleshy. 



Z B^ids rather large, violet- 

 black with grey pubes- 

 cence; ttvigs slate coloured. 

 Leaves compound, pin- 

 nate. Fruit scarlet in 

 clusters. 



Pyrus Aucuparia, Gaert. Rowan. The stem is trace- 

 able through the elongated crown. Branches with smooth 

 o-rey periderm, twigs slightly pubescent. The twigs have 

 a faint unpleasant odour when crushed. The tree shows 

 a great tendency to form suckers below. Flowers and 

 fruit in corymbose cymes. Autumnal leaves yellowish- 

 brown. 



The very similar P. Sorhus, occasionally seen, has 



similarly brown twigs, and also pinnate leaves, but the 



bark is browner and more scaly and the buds green, Avhile 



the fruit is more pear-shaped and olive-brown. The 



crown is pyramidal. 



ZZ Btids not black nor grey- 

 black, but green or olive; 



