156 NOTICES OF BOOKS AND MEMOIRS. 



a variety of rnri)nila spiralis, B. & C, that occurs sometimes upon 

 the Grape iu the United States. 



Amongst the great number of Fungi upon the living and dead 

 Vine-stems and brandies are many new species. The Sphm-ia are 

 designated by their new generic ai^pellations — Cn/ptoralm, Botrt/o- 

 spharia, Bertia, TeicJiOspora, AnthostomeJla, liehentiovliia, Valsaria, 

 &c., names much more famihar to continental botanists than to us 

 in this country, who are somewhat slow in appreciating the 

 advantages of this system of nomenclature. 



Of the hymenomycetous Fungi twenty-two s^Decies are men- 

 tioned, mostly on the dead stems, including a small Agaric from 

 the Cape of Good Hope, Ag. proteus, Kalchbr., allied to A(j. varia- 

 bilis, P. Of the Fungi on living Vine-leaves one of the most 

 interesting is a new species of IJredo, U. Vitis, Thm., which, like 

 Peronospora Vitis, is of Transatlantic origin. 



The difference between the American and European Vine-flora 

 is very striking ; so many Fungi occur in America that have 

 not been met with in Euro]De, where Vines form such an important 

 industry and mycologists are so much more numerous. Manj^ of 

 the old species of Schweinitz have never been met with here. 



A figure is given of the curious mould which grows parasitically 

 upon Oidium Tiickeri, the Cicimwbolu.s Cesatii of De Bary, a plant 

 apparently common enough on the Continent, but as yet un- 

 observed in Great Britain. 



Baron von Thiimen is to be congratulated upon the exhaustive 

 manner in which he has compiled this monograph, which is 

 accompanied by lithographic plates illustrating the structure and 

 fructification of the more important species, whereb}^ the value of 

 the book as a work of reference to the student is materially 

 enhanced. Charles B. Plowright. 



On the Homologies of the Siispensor. By S. H. Vines. (' Quarterly 

 Journal of Microsc. Science,' 1878, p. 58.) 



The author concludes "that the seta and foot of Mosses and 

 Liverworts, the foot of the vascular Cryptogams (excluding 

 EquisetacecB so far), the suspensor of SelagineUa, of Gymno- 

 sperms, and of Angiosperms, are derived from that cell, produced 

 by the division of the oospore, to which, for the sake of clearness, 

 the name of Embryophore has been given. These organs may, 

 therefore, be regarded as truly homologous, and this view is not 

 invalidated by the fact that the suspensor or the foot is developed, 

 in some cases from the whole of the Embryophore, in others from 

 a part of it. This fact merely renders the homology incomplete 

 in certain cases." The term ' Embryophore ' is applied to the cell 

 which gives origin to the tissue maintaining temporary connection 

 between the embryo and neighbouring structures, that of ' em- 

 bryonic cell' to the special cell of embryo-formation, — a convenient 

 piece of nomenclature. The Embryophore, we would observe, is 

 not always produced by a process which, even in its widest sense, 



