356 APPENDIX 



B. Classification of Willows when cT catkins 



ALONE ARE AVAILABLE. 



(1) Stamens five or occasionally more, hairy at 

 the base ; two glands in each $ flower. Petiole 

 glandular. 



Salioc pentandra, p. 211. 



(2) Stamens fewer than five. 



(a) Stamens three, glabrous ; two glands in each 

 <? flower. Petiole glandular. 



Salix triandra, p. 213. 



(b) Stamens not more than two. 



(i) Stamens two, as shown by the 4 anther- 

 lobes; but so closely fused as to appear 

 one; hairy at the base. One gland only 

 to each </ flower. Many of the leaves 

 opposite. 



Salix purpurea, p. 216. 



(ii) Stamens two, free. 



(a) Glands two in each </ floiuer ; scales 

 concolor or nearly so, and caducous; 

 catkins stalked. 



* Stamens hairy ; catkins lateral, large, 

 20 50 X 6 12 mm., with leafy stalk; 

 leaves lanceolate. 



t Leaves silky pubescent ; tree not weeping. 

 Salix alba, p. 211. 



tt Leaves not silky. 

 Branches pendent. 



Salix Bahylonica, p. 209- 



