KEW PUBLICATIONS. 
223 
difficult to trace the origin of the changes which Dr. Gray introduces, 
and to determine those of wliidi he is himself the autlior. An index 
would have enhanced the usefulness of the work. The catalogue of the 
Diatomaceas, by Mr. Carruthers, has been carefully prepared, and the 
need of such a list is evident, from the fact that this contains nearly 
double the species given in any former publication. 
Calalogne of British PZfz^^^s, including the Flowering PlantSj Ferns, and 
Characese ; to which is appended a List of the varieties of British 
Ferns. Foui'th Edition. Printed for the Botanical Society of Edin- 
burgh. 
Edinburgh : Adam and 0, Black. 
London : Longman. 
As the last published work which professes to give an enumeration 
of the British plants, with tlie exception of the lower Cryptogams, does 
not take notice of most of the additions recently made to the British 
flora, as the new edition of Babington's 'Manual' has not yet ap- 
peared, and as Syrae's great work is not yet completed, — this Catalogue, 
executed as it is mth care, and brought down to the latest date, is 
the most perfect list we have of our flora. It contains 568 genera, 
1817 species, and 369 varieties, and is a real boon to all working 
British botanists. Its value will best be appreciated by comparing it 
with the fifth edition of Babington's ' Manual.' The following twenty 
species, most of which were first made known in this Journal, are 
not in Babingtou's * Manual,' viz. ; 
Ranunculus pseuclofluitans. 
Erucastrum inodorum. 
Hutcliiiisia alpina. 
Viola arenaria. 
Sagina nivalis. 
Claytonia perfoUata. 
Uypericuin undulatum. 
Ulex GaUii. 
Trifoluim hyhridum. 
Rosa Eakeri. 
Kosa collina. 
Pyrus rupicola. 
Ammi majus. 
Hcdera Canaricnsis. 
Gtilinsoga parviilora. 
Plantago Cynops. 
!S"eotinea intacta. 
Potainogeton nitens. 
Desmazeria Slcula. 
Chara alopecuroides. 
The followin<r varieties are not in Babin.i^ton's * Manual,' viz. i 
Nymplia;a ^i^b?L^flonhus jpanis, 
Ez'odium ciciitarinm. 
a. pimpmellifolium. 
0. triviale, 
y. pilosiim. 
PotentiUa reptans, $, sericca. 
Asplenium Adiantum-iiigru] 
obtusum. 
atiim 
gmim 
