218 Bibliographical Notices. 
In the work before us, Mr. Leighton has accurately, and in most 
cases very fully, described the plants of his county; and from having 
used several of the continental Floras, in conjunction with that of 
Smith, he has in numerous cases introduced the description of parts 
which that excellent author has overlooked : we would particularly 
mention the seeds, a minute attention to which was not requisite 
when botanists almost entirely confined themselves to the elucidation 
of the Linnzean system alone, but which are now considered of great 
value in determining the natural affinities of plants, as well as in 
certain tribes affording excellent specific characters. 
The book under our notice is arranged according to the Linen 
system, but care appears to have been taken that the generic and 
specific characters should be such as will serve for any classification. 
In some of the more difficult genera outline sketches are given of 
those parts from which the characters have been derived, and these, 
although deficient in artistical beauty, are deserving of the highest 
praise for clearness and accuracy of detail: they include a com- 
plete series of drawings for the Cyperucee, Potamogeton, Valerianella, 
Rumex, &c. 
In looking through the volume, we observe that the account of 
the Cyperacee is so full as almost to constitute a monograph of the 
British species ; Viola is very fully illustrated by new observations ; 
Chenopodium acutifolium and polyspermum are proved to form only 
one species. In the genus Rubus, we have a series of very valuable 
observations from the pens of Nees ab Essenbech, Borrer, and Lindley, 
causing the introduction of the names of several new forms (we will 
not venture to call them species) into the British lists ; in the genus 
Carex valuable characters, illustrated by a complete series of figures, 
have been drawn from the form of the ripe nut; and as the author’s 
observations are manifestly original, he is no doubt ignorant of (or 
perhaps been unable to obtain) the rare work of Schkuhr upon this 
genus, in which a similar, though to our mind, less satisfactory 
series of figures of nuts is given.. The species of oak are illustrated 
by the valuable notes of Professors Graham and Don, three forms 
being distinguished ; we must, however, confess, that our own opi- 
nion is against there being really more than one species in Britain, 
although three varieties maybe easily pointed out. We are acquainted 
with no permanent character by which the oaks can be specifically 
distinguished from each other ; for although in their extreme forms 
they abundantly differ, yet the intermediate forms, both in shape of 
leaf and length of peduncle, do not appear to allow of any marked 
line of separation being drawn. 
The following plants appear for the first time as English plants in 
the present work :— 
Atriplex deltoidea, Bad. Myriophyllum alterniflorum, DC, 
Ballotta ruderalis, Fries. Quercus intermedia, Don. 
Callitriche platycarpa, Kiitz. Scrophularia Ehrharti, Stev. 
Cardamine sylvatica, Link. Senecio erraticus, Bert. 
Cerasus austera, Leight. Spergula vulgaris, Bung. 
Dianthus plumarius, Linn. 
