BOTANICAL INFORMATION. 135 
medium between the placing too little or too much depend- 
ence upon the ramification of the veins. In proportion, 
however, as we advance in our knowledge of the ferns, 
we shall be able to set a more just estimate upon the im- 
portance of venation. "The subject is yet in its infancy. 
The first Part of the Species Filicum contains the genera 
. and species of Gleicheniacee, distinguished as a sub-order 
from Polypodiacee; and of the latter, the Cyathee and 
part of Dicksoniee are given. It will be seen, that the 
genera have mostly very considerable additions made to 
them; but the author has still to regret a long catalogue 
of dubious species, which, in consequence of inefficient 
descriptions, and in the absence of authentic specimens, he 
is quite unable to determine. Most of them, probably, 
belong to well-known species. The second Part of the 
work, which is in a state of great forwardness, is to contain the 
continuation of the Dicksoniee, in which will be included 
those most beautiful and delicate of all known Ferns, the ex- 
tensive genera Hymenophyllum and Trichomanes ; and these 
are already elaborated by the author. 
. Hooxker’s Icones Plantarum. 
This work has met with a degree of success, for a publica- 
tion of the kind, beyond the author’s or the publisher’s (Mr. 
Bailliere) expectations. The first Part of the third Volume 
of the New Series (or seventh volume of the entire work) 
appeared on the first of January, and contains Tass. DCI. 
7-DCL. with their accompanying descriptions. So exten- 
Sive a series of figures of new or little known plants, has 
never been published in this or any other country. The pre- 
sent Number is rich in species from Australia and New Zea- 
land; and there are many remarkable forms among them. We 
may particularly mention the Beech Trees of New Zealand, of 
Which four new species are known to the author: the remark- 
able Seytanthus (Stapelia) Gordoni and S. Currori, the latter 
