92 SALICACEJE. 



ORDER LXXXI. ULMACE^. (ELM TRIBE.) 



ULMUS. (Elm.) 



1. U. suberosa.* Ehrh. (Common Elm.) 

 Woods and hedges. 3-5. 



Very common. The prevailing timber tree of the district. 



#. U. glabra. Sm. (Smooth-leaved Elm.) 



Harrow Weald. Cannons Park. (Flor. Midd.) 



2. U. montana. Bauh. (Wych Elm, or Broad-leaved 



Elm.) 



Woods and hedges. 3, 4. 



Grove, Harrow ; Harrow Park ; also in hedges in 

 Harrow and Pinner. Stanmore and Harrow Weald. 

 (Flor. Midd.) 



&. U. major.* Sm. (Dutch Elm.) 

 Eastcott. 



ORDER LXXXIV. BETULACE^. (BIRCH TRIBE.) 



i. Betula alba. L. (Common Birch .) 



Woods. 4, 5. 



Not unfrequent in plantations, etc., at Harrow. Pinner 

 Hill ; Harrow Weald Common. 



ORDER LXXXV. SALICACE.E, (WILLOW TRIBE.) 



SALIX. (Willow, Sallow, Osier.) 



S. triandra. L. (Blunt Stipuled Triandrous Willow.) 

 Banks of rivers and ditches. 4-6. 

 Bank of River Brent, near Alperton. 



