96 NOTICES OF BOOKS. 



Klotzsch, J. F. ; iiber Pistia. Mit drel UthograpJdrten Tafeln. (Ge- 

 lesen in der koniglichen Akademie der WissenschaPten am 2 Decem- 

 ber, 1852.) Berlin, 1853. 



This is a quarto brocJmre of thirty pages, giving a full history of Pistia 

 and its affinities, constituting the Natural Order Pistia ce^, which 

 is here made to include three Genera : — 1. Apiospermum^ KI. (the Fidin 

 dbcordata, Schleid. and Kunth = Tldia Stratiotes, H. B. K.), native of 

 Brazil. 2, LimnonesiSy Kl., of which there are two species, Pistia com- 

 mutata^ Schleid. and Kunth, native of Surinam, and Pistia Priedricfis- 

 thalianay Kl., from St. Juan de Nicaragua. 3, Pistia^ Linn. : under this 

 genus Dr. Klotzsch enumerates seventeen species, of which the majority 

 are new, inasmuch as most botanists have been disposed to consider 

 that there was only one true species dispersed over almost all the warm 

 parts of the globe. Whatever difference of opinion however naturalists 

 may entertain on the subject of genera and species of this small, but 

 very remarkable group of plants, there can be none as to the merits 

 and execution of the figures of Stratiotes Texensis^ Kl., collected by 

 Lindheimer. The analysis of the flower and fruit, and the anatomical 

 structure, are alike excellent. We wish the figures had been illustra- 

 tive of one or both of the new genera, rather than of a species which, 

 as we possess it, and from Lindheimer too, we should have had no 

 hesitation in pronouncing identical with the East Indian P. Stratiotes. 



LiNDLEY 



of Orchids. Part V. Svo. London, 1854, 



of 



In tliis Part the vast genus Epideiidrumy counting 246 species in all, 



is concluded. 



Miltonia 



Brassia^ Br. (17 species); Ada^ Lindl., uov. gen. (1 species, Ada au- 

 rantiaca, from New Grauada) ; PolycJiilos, Kuhl and Hasselt (1 spe- 

 cies) ; CorymliSy Thouars (1 species) ; Sohralia, E. et P. (24 species) ; 

 Ccelogyne^ Lindl. (44 species) ; and Panisea^ Lindl. (4 species. 



