BRITISH OAKS 7 
must be adopted. The name Q. pedunculata of Ehrhart appears 
without description, and cannot possibly be made the starting- 
point of a spe cies ; and besides, Ehrhart’s name is later than 
Miller’s. If the view of the London Catalogue be taken that this 
Oak is a variety of Q. Robur, Martyn = not Ehrhart should be 
cited as the Eire ane of the varietal n 
may always be identified oie the presence of two 
completely ado’ auricles at the base of the under surface 
pr : 
the base. Rarely the fruit of Q. Robur is subsessile or sessile. 
shape the acorns are usually oblong or cuneate-oblong, but some- 
times comparatively long and narrow. Several of these fruit-forms 
or ire — are constant on the same tree from et ben! to year. 
Sessile leas, too, u: Cc h h rise from cut 
— of the old trees, or from adventitious buds low down on the 
‘nad trees. It is usual for some of the conspicuous leaf- 
veins, eapoctally the low r ones, to terminate at the bases of the 
sinuses. As Greville porn out in 1844, “it is impossible to define 
the general outline or circwmscriptio of the leaf,” as the size and 
shape of the leaf are very variable. In general, however, it may be 
said that in @. Robur the sinuses of the leaf are deeper, narrower, 
more acute, and more irregular than in Q. ae The lobes, 
too, of the leaves of Q. Robur are, as a rule, e irregular in 
size and shape, and are somewhat out of the seein leaf-plane. 
Some of the eset - oe pope 2 Air ; and certainly 
some are constant on certain trees from year to year. Mr. Henry 
(Trees of Great Dieciode: ii. 984). mentions fave arboricultural 
“varieties” of Y. Robur; and Lasch (op. cit.) describes a very large 
number of varieties and sub-varietie 
panes hairs appear to be ones absent from all parts of 
Q. Robur. This is important; for, as already stated, most rg 
of Quercus possess such hairs, although glabrous species 
— of the ——— divisions. Q. alba, possibly the ne. plant 
med @ 
rin the Li innean He erbarium, i is ¢ also glabrous aes 
may be modified by the enirets of picrtrart es but, on the whole, 
Q. 7, when grown in profi eee a flatter crown, 
a shorter bole, and more tortuous tortuous branches than Q. sessiliflora. 
