REPORT FOR 1909. 
473 
Betula alba (verrucosa) X iouientosa [ref. No. 3381]. Garve, 
E. Ross, v.-c. 106, July 20, 1909. This, from its characters, I 
believe to be a hybrid between the “ weeping ” form of B. alba 
{B. pendula^ Roth.) and B. tomentosa (pubescens, Ehrh.). Branches 
drooping ; intermediate in foliage and catkins. Lateral lobes of 
female catkin-scales mostly spreading, sometimes rather recurved. 
It occurred in two different forms. — E. S. Marshall. Also sent 
by W. A. Shoolbred [ref. Nos. 686 A and 688 A]. We cannot 
satisfy ourselves that this is a hybrid. The leaves are entirely 
those of verrucosa, with just a few scattered hairs on their margins. 
And the fruit is not broadly oboval. The catkin-scales are 
perhaps intermediate in shape between those of the two species ; 
but we have reason to think that little reliance should be placed on 
this distinctive feature. In Koch’s descriptions (ed. iij.) no prom- 
inent place is given to the catkin-scales. — C. Bucknall and J. W. 
White. 
Betula tomentosa, Reith & Abel, var. parvifolia, E. S. Mar- 
shall [ref No. 687 A]. Garve, E. Ross, v.-c. 106, July 20, 1909. 
— W. A. Shoolbred. 
Betula nana, L. Alpine gorge, by stream, N. side of Sgur na 
Mhullin, E. Ross, v.-c. 106, July 19, 1909. — W. A. Shoolbred. 
Alnus rotundifolia. Mill., var. incisa. Two or three fine trees 
by the Cherwell in the Parks, Oxford, Sept., 1909. Doubtless 
planted ; one tree near Wolvercote is stated to have been planted 
by William Cobbett. — G. C. Druce. This plant is probably the 
var. incisa, Syme, ‘E. B.,’ viii. 179, but not of Willdenow, ‘Sp. PL’ 
iv. 335, 1805. 'Phe correct name is A. rotundifolia, Mill., var. 
laciniata (Willd. l.c.). Druce, ‘Brit. PI. List,’ p. 64, igoS = A. 
laciniata, ' Ehrh. Beit.’ iii. 82. The var. incisa, Willd., has a much 
smaller leaf See Elwes and Henry, ‘Trees,’ vol. iv. — G. C. 
Druce. This is not var. incisa, but a typical example of A. gluti- 
nosa, Gaertn., var. laciniata, Willd., which according to Duhamel 
occurs wild in the north of France. There are fine trees of this 
in cultivation in England. — A. B. Jackson. 
Quercus Robur ( = pedunculata) x sessiliflora. ’White \V’ood, 
Gamlingay, Cambs., May 20 and Oct. 27, 1909, from same tree. 
See ‘Journ. of Bot.,’ 1910, p. 34— C. E. Moss. Most carefully 
prepared specimens of an interesting plant, of which Dr. Moss has 
carefully explained the origin. — G. C. Druce. 
X Salix hippopha'efoUa, d'huill. Low bushes on the right bank 
of the Wye near Ross, Herefordshire, May 8 and August 6, 1909. 
— Augustin Ley. This is a good intermediate between S. tri- 
