286 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 



Salix purpurea x viminalis = rubra, Huds, Formby, S. Ijancs., 

 v.-c. 59, June 29, 1912.— W. G. Travis. "The broad leaved form of 

 S. purpurea x viminalis, which is rather nearer S. purpurea of the 

 two parents. Distinguished as S. rubra, var. Forbyana (Sm.)." — E. F. 

 Linton. 



t^alix aurita, L. ? ^"^^ 6- Burleigh Meadows, Langley, near 

 Hitchin, 1911, 1912.— J. E. Little. " Yes."— E. S. Marshall. 

 "Right." — E. F. Linton. 



Populus alba, L., On right bank of the Hiz, in Beds, Cad well 

 Bridge, near Ickleford, Herts ; March, May and June, 1912. A fine 

 old tree. Height, 78 feet, 6 inches. Girth at 4 feet from ground, 

 12 feet, 4 inches. Spread, 73 feet. Being old, the leaves are small, 

 with little trace of lobing. One of its suckers has grown into a small 

 tree 10 feet high, with more lobed leaves. We have eight other large 

 jP. alba in the district, in Herts. — J. E. Little. " Correct, I believe. 

 Mr Little notes that the tree from which these specimens was taken is 

 80 feet high, which is unusually large for P. alba, but I saw some fairly 

 good specimens at Hampstead last autumn."— A. B. Jackson. 



Populus Ga7iesGens, Sm. x tremula, L. 9 (fide C. E, Moss). Grove 

 Road, Hitchin, Herts. March, April and June, 1912. Height, 

 40 feet (has lost its top). Girth at 4 feet from ground, 4 feet, 4 inches. 

 Spread, 33 feet. Stigmas pink, not so dark as P. tremula, and differing 

 in form. — J. E. Little. 



Populus tremula, L. ^. Little Wymondley, near Hitchin, Herts, 

 Feb. 28 and Sep. 9, 1912.— J. E. Little. 



Populus tremula, L. Lane between Grove Mill, Hitchin, and 

 Hyde Mill, Ickleford, Herts. Feb. 24 and June 30, 1912.— J. E. 

 Little. 



Populus nigra, L., var. betulifolia, 9 (fide C. E. Moss). Left bank 

 of stream, at lower end of Dalham Village, W. Suffolk, near a 

 P canescens, Sm. Height, about 100 feet. Spread, 40 feet. Lower 

 branches drooping below the horizontal. May 11 and Sept. 25, 1912. — 

 J. E. Little. " Yes ; very good examples of the true Black Poplar. 

 The shoots are pubescent, which is a distinguishing character of the 

 variety betulifolia. It is the common form in this country. On 

 different trees, however, the pubescence varies very much in quantity." 

 — A. B. Jackson. 



Populus nigra, Ij.f va,r. betulifolia. Cuxham, Oxford, June 1912. 

 Not quite typical, as they do not show in all cases the characteristic 



