180 NOTICE OF BOTANICAL PUBLICATIONS, 
rarely attended to, of the distribution of species at the two 
extremities of the Mediterranean undér the same latitude, 
and this not in herbs and annuals which migrate easily, butin 
permanent or arborescent species, and in mountain. vegeta- 
tion. The Canarian Flora first drew my attention to this 
subject. Our knowledge likewise of the vegetation of south- 
ern Europe, which has been the object of too many isolated 
labours, is obstructed by a mass of puzzling synonyms. As 
far as time and circumstances will permit, I have striven to 
clear away some of this accumulation of Augean rubbish; and 
where I shall be found to have erred, the cause of error will 
have doubtless proceeded rather from the wish to unite the 
same forms, than from any desire to create new names. 
Let us hope that this and similar works may at length awaken 
the Spanish botanists from that tevy Ajbdagyoy Baby, in which 
they have too long indulged. It is to them alone that we 
must look for a complete catalogue of the richest and most 
varied Flora of Europe, for as Pliny truly says, after Italy 
the garden of the world, < exceptis Indie fabulosis, proximé 
quidem duxerim Hispanium quàcumque ambitur mari.’ ” 
The Oaks being trees of peculiar interest, attracted Mr 
Webb’s particular attention, and his catalogue comprises * 
eleven species, of which, however, one is Mauritanian. They — 
are divided into three groups. I. Quercus Drecipum. |. Y 
Q. Robur, L., (comprehending Q. pedunculata, and Q. sessili- — : 
Jflora, of authors). 2. Q. Toza, Bosc.; the geographic range 
of which is much wider than is generally supposed. «i 
gathered it not only in Spain, plentifully, but likewise in the 
woods around the Bosphorus, and in the valley of Domouz | 
Deréh on the Black Sea. . It will doubtless be met with in - 3 
other intermediate points between these widely separated ui 
stations," —IL SUBDECIDUÆ. 3. Q. humilis, Lam. “This 
is altogether a south-western species. I believe the neigh- — 
bourhood of Gibraltar to be its easternmost station. It — 
entirely covers the arid tracks where it appears, reaching à — 
height of from six inches to three feet, though I have seen at- 
times bushes which have attained twelve or more feet. 4 - 
