t 



116 



that he can distinguish generic and specific microscopic characters. 



Vinegar Plant — Growth of, in Fermented Grape Juice. — N. L. 

 Britten. (Trans. N. Y. Acad. Sci., vu, pp. 66-70 ; reprinted.) 

 Describes the gelatinous, stratified cylinders formed by an 



organism identified as Saccharomyces cerevisiee, Reess, and the 



appearance of Penicillinm and other moulds on exposure of 



these to the air. 



Willows — Two Beatitiftil North American. — H. Zabel. (Garten- 

 flora, xxxvi., pp. 410-412, figs. 98-100.) 



This paper gives minute descriptions of Sahx lasiandra^ 

 Benth., var. lancifolia, (Anders.), Bebb, and S. nigra. Marsh., 

 var. falcata, (Pursh), Gray. In regarding Andersson's 5. lanci- 

 folia as a variety of S, lasiandra the author takes occasion to 

 remark : " I follow in the naming the profound connoisseur of the 



Willows. Michael 



Greene has recently dedicated a new genus of Compositae, 



>> 



(J 



paltistris — Le mode de Fecondation du. — M 



Reviews of Foreign Literatures 



Notes on HackeVs Mo7iograph of Graminece, — Prof. E. Hackel, 

 of St. Poelten, Austria, who is one of the best living agrostolo- 

 gists, has recently pubUshed as a part of '* Engler and Prantl s 

 Naturliche Pflanserifamilien^' a monograph of the order Grami- 

 neae, which is of particular interest as representing the views 01 

 European botanists as to the subdivisions of this vast order. The 

 primary divisions are the same as those of Bentham and Hooker, 

 although not in the same relative order. But in the distribution 

 into genera, there are many changes. Sometimes these changes 

 are in the reduction of genera to sections, and sometimes in the 

 elevation of sections to genera. 



The whole number of genera recognized by Prof. Hackel is 

 313, whereas the whole number given by Bentham and Hooker 

 is 298. Tliere are a few new genera established since the pubh- 

 cation of the ^'Genera Plantarum^' of Bentham and Hooker, which 

 accounts partly for the increased number. It may be interestmg 

 to note such of the changes as relate to the grasses of the United 

 States. 



I 



