﻿296 BOTANICAL GAZETTE [afril 



shalled under different headings ; a section is likewise devoted to similarities 

 between plants and animals. The conclusions deal with causes and uses. 

 Aside from genetic relationship and similar life conditions, the author thinks 

 that hidden inner causes also cause similarities (e. g. in the pods of legumes 

 and crucifers). The author thinks that likenesses, like many other things in 

 plants, are generally useless, and that there is nothing analogous to the use of 

 mimicry by animals. — H, C, CowLES. 



M. LE Professeur Abbe H. Leveille^ has begun the publication of 

 an elaborate monograph of the genus Onothera, all of whose species are 

 American, with the exception of a single Tasmanian species. This first 



fascicle comprises 138 pages, with numerous heliogravure plates and text 

 cuts. After an analysis of Spach's monograph of 1835, and a general state- 

 ment concerning anatomical characters and those from the seed the genus is 

 presented under its five grand divisions (Scutiformes, Nuciformes, Laterni- 

 formes, Siliquiformes, and Prismaliformes). The species of each division 

 are then presented and illustrated, the fascicle ending in the midst of the 

 third group. The second fascicle is promised early in 1903, and the third in 

 February 1904. — J. M, C. 



H. VON ScHRENK^ has published an account of a disease of the white 

 ash caused by Polyportis fraxinophilus^ which is very prevalent in the Mis- 

 sissippi valley, and is particularly severe in Missouri, Nebraska, and eastern 

 Kansas, fully go per cent, of the trees in some localities being affected. The 

 bulletin discusses the geographical distribution of the disease, susceptibility 

 to this disease, method of attack, diseased wood, the sporophore, microscopic 

 changes in the wood, growth of the fungus in dead wood, and remedies, 

 — J. M. C. 



The lamented death of Dr. K. Gustav Limpricht is fortunately not to 

 interfere with the completion of his work, Die Laubmoose, in Rabenhorst's 

 Kryptogamen-Flora. The thirty-eighth part of the work, just issued, bring- 

 ing the supplement well into the Bryums, and thus covering about three- 

 fourths of the original, bears the name of Dr. W. Limpricht in association 

 with his father's. Another part will probably close the final volume. — C. R. B, 



O. VON Seemen^ has published an admirable account of the willows of 

 Japan. After a discussion of previous contributions, geographical distribu- 

 tion, and the general principles of classification in the group, the 33 species 

 are presented, 8 of which are new. The descriptions are very full, and the 

 plates leave nothing to be desired. — J. M. C. 



7Leveill6, H., Monographie du genre Onothera. Le Mans. 1902. Edition 200 

 copies, price loo/r. 



^VON SCHRENK, Hermann, A disease of the white ash caused by Polyporits 

 fraxinophUus, U. S. Dept. Agric, Bureau of Plant Industry. Bull. 32. pp. 20. pis, 5- 

 Feb. 1903. 



'Seemen, O. von, Salices Japonicae. pp. vii + 83, pis. 18. Leipzig: Gebriider 

 Borntraeger. 1903. M z^. 



