156 BOTANICAL GAZETTE [February 



The book is a broad and comprehensive treatment of the subject of heredity, a 



mine 



worker 



The 



find 



day views on these problems.— R. R. Gates. 



Laboulbeniales 



Thaxter. 



The review in this journals gave a general account of its contents, which presented 



Lorphology 



of genera and species known at that time. During the last decade material has 

 accumulated rapidly, and several preliminary papers describing it have been 

 published. There has now appeared a second part of the monograph/ which 

 brings together the material and illustrates it by a series of handsome plates. By 

 means of visits to European collections and to South America, and through numer- 



correspondent 



part nearly 35 o forms are illustrated, which increases the number described to about 

 500, included in more than 50 genera. In addition to these, more than 100 new 

 species have been assembled since the completion of the present plates (in 1905), 

 and these will be described and illustrated as soon as possible. 



A brief review of the literature since 1895 is given, with comments on the 

 morphology, development, etc., of the group, based upon the new data available. 

 1 here is some modification in the conceptions of generic types, in the distinctions 

 e ween series, etc. ; but the comparative morphology of the group remains essen- 

 tially a S it was presented in 1895. This will be somewhat disappointing to those 

 luaents of morphology who wish to relate Laboulbeniales positively to the 

 ondeae; but the author wisely remarks that "it is foolish, on the basis of our 

 present knowledge, to attempt an arbitrary settlement of the complex phenomena 

 01 senes arnon? ihp f.inm " wi—j_.« . . .. . \ , ...u~,:»u 



among the fungi 



no one else can afford to be so. Nevertheless, he thinks the statement safe that 



the group resembles the Florideae "in some respects more closely than they do 



ny other plants, while at the same time they-are more surely ascomycetes than 



Iced I m p cluded in this group -" He sees no reason wh y the y should not te 



creates, etc. 



and If T n ' aS the former one > is a m ^el of painstaking and exact work, 



mTtel ir? ghed Statement ' and » is al*> *n illustration of the wealth of 



material available for those who can see.-J M C 



^ Box. Gazette 23: 2l6 . l897 



ace a e TH part II' Me^ C ° ntribution *""* a monograph of the Laboulbeni- 



II. Mem. Amer. Acad. Sci. I3 : 2 i 9 - 4 6 9 . pis. 28-61. 1908. 



