286 NOTICES OF BOOKS. 



recently tolerably well elaborated by other authors, and the labour of 

 them is consequently very much diminished. 



Articles VI. and VII. are the last on our list, and are from the 

 pen of the present Professor of Botany and Director of the Botanic 

 Garden at Leipzig, the able successor of a very distinguished Pterido- 

 logist, Professor Kunze. Here too, in Article VI., under the unassu- 

 ming title of ' Filices Hort. Bot. LipsienswJ is a great amount of infor- 

 mation and a most extensive suite of figures, illustrative of the struc- 

 tural nature of Perns, especially as regards the venation; not only 

 derived from cultivated specimens, but from a great number of species 

 and genera only known in herbaria, added, as it were, supplementa- 

 ry to the garden species. The result of this author's studies how- 

 ever leads to conclusions the very opposite of the views entertained by 

 the preceding authors here mentioned, for he combines a great many 

 modern genera and invents a great number of new terms for his divi- 

 sions and subdivisions, which stand in need of explanation: This is, 

 no doubt, fully given in the preface, which occupies between eleven and 

 twelve closely printed folio pages, unfortunately in German, which 

 renders them sealed pages to us ; a very great number of the remarks 

 too on genera and species in the body of the work are in German. 



As an illustration of his method, we may observe that he reduces 

 Acrostichacea to five genera, of which Acrostichum, Linn., is the first, 

 and this has seven divisions or sections, under the following titles : — 

 § 1. Ccenopteris et Cyclopteris (includes the genera Khipidopteris, &V^#, 



and Microstaphyla, P/\). 

 § 2. Neuropteris, Tceniopterh, vel Eupteris (Elaphoglossum, Schott). 

 § 3. Boodya, macula pluriseriatce, subflabellata (Anetium, Pr.). 

 § 4. Lagenia (Leptochilus Linnseanus, Fee). 

 § 5. Boodya appendiculata (Leptochilus, Kaulf.). 

 § 6. Brynaria subregularis (Leptochilus, Bl.). 



maculis Boodya appendiculatis juncta (Gymno- 



Nervi 



His 



pteris Vespertilio, Hook.). 



Olfi 



Raddi; fourth, Chry sodium, Pee, Acrost. ; but assuredly not restricted 

 to PeVs species, which are exclusively Acrostichum aureum and its allies 

 (or varieties) ; whereas Mettenius includes Acrost. crinitum, Sw. (Hy- 

 menodium, Fe'e) ; and a group called Lomariopsis, which embraces that 

 genus of Foe, Photiwpteris, J. Sm., Jenkimia, Hook., etc. These and 



