CHAP. CV. CORYLA‘CER. QUE’RCUS. 1741 
of the Rodbur as corrupting and rotting in the sea, concludes that the 
term never can apply to our English oak. He supposes that it belongs 
to Q. s. pubéscens, confounding, as Martyn does, that variety with Q. 
Taizin, which is not even a native of Britain, and is by no means common 
on the Continent; but, as the wood of Q. sessiliflora approaches nearer to 
that of Q. Taizin than the wood of Q. pedunculata, our own opinion is, 
that Willdenow and Burnet have approached nearer to the truth than 
Smith. 
We have, however, deemed it most convenient to follow Linnzeus, in adopt- 
ing the term Robur to designate a group of closely allied species, or perhaps 
only varieties. 
Description. According to most authors and observers, there is little or no 
difference in magnitude or general appearance between the entire full-grown 
trees of Q. pedunculata and Q. sessiliflora; though some affirm that the former 
is a low spreading tree, and the latter a tall conical one. Fig. 1580. is given 
1580 
, ee haa! ZC. STRV7Ta—— 
by that eminent artist J. G. Strutt, as characteristic of the general form 
of both species. Both are described by Smith as large trees; and by 
Willdenow as trees growing from 30 ft. to 50 ft. high, and as enduring for 
500 years. According to Bosc (Mém. sur les Chénes, &c.), Q. sessiliflora 
may be known by its spreading branches, and Q. pedunculata by its com- 
paratively fastigiate branches and pyramidal form. Some, on the contrary, 
assert that Q. sessiliflora becomes a loftier and more pyramidal tree than 
Q. pedunculita; and this is said to be particularly the case in Wyre 
Forest, where, it is stated by Mr. Pearson, gardener to W. L. Childe, Esq., 
one of the principal proprietors of the forest, to be almost as different in 
appearance from Q. pedunculata, as Pépulus fastigiata is from P. monilifera. 
At Ken Wood and Woburn Abbey, it cannot be said that the difference in 
magnitude and general form is remarkable. We are strongly inclined to be- 
lieve that there is no important and constant difference between the mode 
of growth of the two species; because we have found individuals of the one 
