184 TIIE JOl KXAL OF BOTAKT 



based on Cctmpderia paniculata Donn. Sm., with remarks on allied 

 genera : Mr. F. W. Pennell lias discovered Rafinesque's Autikon 

 Botanicon, " which, while pretending to be but a catalog (jsie) of 

 specimens for sale, is actually a study abounding with generic and 

 specific descriptions but is never cited in the Kew Index," and was 

 apparently unknown to Asa Gray. ' 4 TLis paper is the first of several 

 in which [Mr. Pennell will] attempt to record briefly the unrecorded 

 genera of Rafinesque, upon what they are based, and whether the 

 names are available for use " : the present instalment contains SI of 

 these names! We do not think botanists generally will congratulate 

 Mr. Pennell or themselves on the discovery. 



The Botanical Gazette for March contains a paper by L. E. 

 Miles on " Leaf Spots of the Elm," with three plates; J. H. Schaffner 

 writes on the " Influence of Environment ©n Sexual Expression in 

 Hemp" (1 plate) ; Edith S. Whitaker reports "Experimental Investi- 

 gations on Birch and Oak " (4 plates) ; and Theo Holm contributes 

 a notice, with portrait, of the late John Macoun. 



The Journal of the Arnold. Arboretum for January, lately to 

 hand, contains a " Botanical Reconnaissance of Southern Illinois," 

 by E. J. Palmer; a continuation of Prof. Sargent's " Notes on North 

 American Trees," including a new species of Halesia (II. monticola) 

 and several new varieties; "New Species, Varieties, and Combina- 

 tions," by Alfred Rehder ; and useful " Bibliographical Notes," by 

 Ethelyn M. Tucker, in which the " Nouveau Duhamel " and Torrey 

 and Gray's Flora of North America are dealt with. The number 

 also contains a paper in which Mr. Rehder discusses the application 

 of the names Azalea and Loiseleuria, and arrives at the following 

 conclusions: " Azalea Linnseus is based chiefly on A. procttmbens 

 which must be considered the type of the genus. According to the 

 International Rules, Loiseleuria which also is based on A. procumbt ns 

 is a no men conservandum and therefore the name to be adopted for 

 A. procumbens ; Azalea Linmeus thus becomes a synonym of Loise- 

 leuria. According to the Philadelphia Code Azalea Linnseus must 

 be considered the valid name for the genus now generally called 

 Loiseleuria, another name Azalea in the conception of Britten and 

 Small must be replaced by Tsutsusi Ada n son." 



In a handsome quarto volume published by Det Kongelige Norse 

 Videnskabers Selskab (Contrib. ad Fl. Asia? Interioris Pertinentes, 

 vol. iii.) Henrik Printz gives an account of The Vegetation of the 

 Siberian-Mongolian Frontiers, based on the collection of vascular 

 plants observed during his journey in the summer of 1914 in Southern 

 Siberia and north-western Mongolia. The contents include a full 

 description of the phytogeographic relations of the regions traversed 

 and an enumeration of the plants observed, with critical notes and 

 illustrations in the text; there are also twelve plates, reproduced by 

 photography, in which new species or subspecies of Garece, Rami nail us, 

 Aconitum, Veronica, Taraxacum, Pedicularis, Papaver, and Oxy- 

 tropis arc represented. 



The Annali di Bofanica (28 Feb.) is devoted to "Nuove 

 rieberche sulla embriologia delle Asteracea" by Dr. E. Carrano, with 

 nine plates from drawings by the author. 



