REVIEWS AND CRITICISMS. 17 



hand. During that time hundreds of new species have been 

 described, many generic disturbances have been brought 

 about, a great many observations have been made and facts 

 recorded. 



It does not require a long perusal of the present pages to 

 dispose one to the opinion that Dr. iiobioson has performed 

 his task felicitously. For the manuscript as left by Dr. Gray 

 in 1888 has been so edited that it is iu spirit, as nearly as the 

 editorial function could bring it, of the year 1895. The ma- 

 terial which has been interpolated in the body of the manu- 

 script and appears in the form of footnotes is, according to 

 our light, by far the most interesting feature of these pages, 

 and the most useful. One finds a convenient record and 

 analysis of some things that have been said and nearly all 

 tliat have been written in recent years up to within the last 

 few months on the American botany of these orders. De- 

 scriptions of new species by the editor frequently appear ; 

 transcripts of descriptions of species by other authors have 

 been added ; equivalents are given for such recently pub- 

 lished species as the editor sees fit to reject; "species of un- 

 certain or doubtful affinity," ' (all, curiously, of a single 

 author), have their characters transcribed and find place at 

 the end of the genus to which they belong ; opinions and 

 comments are set down ; localities, new stations and refer- 

 ences are gathered together from many sources. 



The manuscript as left b)'^ Dr. Gray offers little that is 

 new. In Eschscholtzia it is interesting to note that twelve 

 species are described, but we are inclined to believe that the 

 analysis will be found unsatisfactory in not a few particulars. 

 It seems to us that the general treatment of Cruciferse will 

 be found least wanting. Thysanocarpus is bereaved of 

 Athysanus which latter Dr. Gray in 1885 thought to be only 

 a species of the former genus characterized by a wingless 

 silicle. Streptanthus barbiger, niger and secundiis, all of 

 Greene, are given place, while S. pulchellus and Bioletti of 

 the same author are referred to S. hispidus, Gray, as is also 

 S. MildredcB, Greene. S. suffrutescens is recognized and S. 



