256 NOTICES OF BOOKS. 



Stetjdel, E. G.: Physicus Erlangensh; Synopsk Plantarum Gluma- 



CEAKUM. Fasc, 1. Gramiuese. Large 8vo. Stutgart. 



This number commences, at once, and without any prefatory matter. 

 With a character of the Natural Order Grammes ^ and (we presume, 

 with the intention of adopting the exact arrangement of Kunth) with 

 the Oryze(2. Then follows Phalaridefs, and the third tribe is Panicem. 

 The genus Paspalum^ which in Kunth's Synopsis reckoned 179 species, 

 given without any divisions or sections, here numbers 262 species, 

 divided into groups, with characters such as the following, which, we 

 fear, will practically be found wholly unavailable. "A. Spiculis pu- 

 sillis vel minimis." "B. Spiculis plus minus lineam a3(juantibus, parvis 

 maguis maximisque." "C. Species quoad magnitudinem absolutam 

 minus distinctBe." "D. Species quoad sectiones priores vel omnino 

 minus notre." — Panicum, in Kunth, amounting to 421 species, is here 

 exactly doubled, 84-1 species finding a place here. Earely are any re- 

 marks given, or diagnoses, beyond those of long specific characters ; and 

 we fear a working Botanist will find these as unintelligible as those of 

 Kunth have proved to be : and how many of these 841 species oiPani- 

 cum may be good, we must leave to the judgment of future botanists. 



Monograph of Tropical American, Oaks, 



Dr. Liebmann, of Copenhagen, the distinguished traveller in Mexico, 

 and the worthy successor of Professor Hornemann in the Botanical 

 chair of the University of Copenhagen, has in a very forward state a 

 History, with numerous figures (we believe, in folio), of the Oaks of 

 tropical America. His own collections of these are very considerable, 

 and those of other Herbaria have been made available to him ; and we 

 are sure that the publication will be as acceptable to all botanists, as it 

 will be honourable to the author. We learn that here, as is the case 

 in all extensive genera. Dr. Liebmann has found it necessary to reduce 

 very considerably the amount of book-species. 



ERRATUM. 



i 



At p, 354 of our last volume (5), Mr. Nuttall named a new species of Rhododen- 

 dron^ B, jmmilum, without observing that the name was previously given to a species 

 by Dr. Hooker. Mr. Nuttall wishes the name of R. leptocarjium to be substituted 

 for his R. pumilum^ 



