427 
ms 
r 27. Morus nigra Grown at Kew 
28. Ficus carica Algeria. The Duke of Malakoff 
29. Platanus x acerifolia Grown at Kew. 1916 
50. Juglans nigra Canada. Capt. Lefroy 
31. Juglans regia Tukdah. Forest, Darjeeling. Gamble No. E. 357. Ind. For. Dept 
32. Alnus glutinosa Balkan States. 67.1929. Imperial Institute 
33- Betula pendula Brocklesby Park, Lines. 99.1910. Earl of Yarborough 
| 34. Betula pnhescens Sweden I6.I965. Smithsonian Inst. no. 6223 
35. Carpinus betulus Grown at Kew. 1917 
36. Corylus avellana Grown in Tuscany 
37. Castanea sativa 2O.I983 British Museum (Natural History) 
38. Eagus sylvaticn 69.1907 Col. Sir Ivor Herbert 
■' ’ X 
39• Quereus ilex Britain A 
40. Quereus petraea The Admiralty 
41. Quereus robur Grown near Malvern. 125.1909 Ministry of Agriculture 
42. Populus alba Britain Iawson’s collection 1851 
43. Populus canescens Grown at Ashtead Park, Surrey 
44. Populus nigra Khowsley, Lancs. 78.1910 Earl of Derby 
45. Populus tremula Brocklesby Park, Lines. 99.1910 Earl of Yarborough 
46. Salix alba Algeria Duke of Malakoff 
47. Salix babylonica Grown at Kew. 1918 
48. Salix caprea Britain Iawson's collection 
49. Salix fragilis 99.1910 Earl of Yarborough 
50. Salix pentandra Grown at Kew. 1909 
51. Cedrus libani Mt. Lebanon. 169.1860 Sir J.D. Hooker 
52. Iarix decidua General Strachey 
53. Picea abies 69.1907 Col. Sir Ivor Herbert 
54. Pinus pinaster Brocklesby Park, Lines. 99.1910 Earl of Yarborough 92 
55. Pinus pinea Israel 1.1925 Messrs. Fr. Vester & Co. Jerusalem 
56. Taxus baccata Killamey, Ireland. 20.1983 British Museum (Natural History) 
57. Pinus sylvestris Dupplin Castle Est., Perth, Scotland. 19^4 
