24 Floristik, Geographie, Systematik etc. 



Bucknail, C, A revision of the genus Symph\tum, Journ. 

 (Journ. Linn. Soc, XLI. 284. p. 491—585. 2 figs. 1913.) 



In the introductory part the author deals with the geographica! 

 distribution, history of the species, description of the genus and the 

 previous Systems of division of the genus. Then follow a conspectus 

 of the sections adopted, a dichotomous key to the species and an 

 enumeration of the species. For each species a description is given, 

 füll synonymy and a list of the specimens examined. Under a large 

 number of the species copious critical notes on affinit}', etc. are 

 given. Two new species are described: -S. armeniacimi and 5. Born- 

 ynuelleri. In an enumeration of the hybrids one is described as new: 

 X 5'. Bicknellii (S. hulhosum X tuberosum). Appended is a list of 

 authors consulted or quoted. W. G. Craib (Kew). 



Chalon, J., Mairlot, J. L. Wathelet, C. Aigret, H. van den 

 Bpoeck, L. Magnel, E. Päque, AI. Charlet, A. Verhulst, 

 R. Noveau, A. Hardy, J. Massart, G. Smets et E. Dupreel, 



Que sont devenues nos plantes rares de 18 (d 2? 

 (Bull. Soc. roy. Bot. Belgique. LH. p. 18—93 1913.) 



C'est en 1862 que fut creee la Societe roj^^ale de Botanique de 

 Belgique. Un enquSte a ete faite un demi-siecle plus tard afin de 

 recueillir des notes sur le sort actuel des plantes considerees comme 

 rares en 1862. Elles sont publiees sans que Ton ait formule des 

 conclusions et elles sont accompagnees d'un repertoire alphabetique 

 des especes citees. Henri Micheels. 



Clements, F. E., C. O. Rosendahl and F. K. Butters. Guide 

 to the spring flowers of Minnesota: field and garden. 

 (Minnesota Plant Studies. I. Third edition. Minneapolis, May 1913.) 



General directions, for beginners, are followed by a ph5ioge- 

 netic Chart, a key to the families, and a well illustrated key-synopsis. 



Trelease. 



Clements, F. E., C. O. Rosendahl and F. K. Butters. Minne- 

 sota trees and shrubs. An illustrated manual ofthe 

 native and cultivated Woody plants of the State. 

 (Rep. Bot. Survey. IX. Minneapolis. Aug. 15, 1912.) 



An octavo of XXI, 314 pages with map and over 100 original 

 and good illustrations. Contains general instructions suitcd to be- 

 ginners, wiih foliage and liower keys, and a systematic account 

 of 274 species, representing 100 genera. Trelease. 



Clements, F. E., C. O. Rosendahl and F. K. Butters. Minne- 

 sota Plant Studies. Guide to the autumn flowers of 

 Minnesota, field and garden. (Univ. Minnesota, Minneapolis. 

 V. p. 1—77. with textlig. June 1913.) 



Following earlier issues on spring flowers, trees and shrubs, 

 ferns and fern allies, and mushrooms of the State, and to be fol- 

 lowed by one on school gardens and <rreenhouses, the present 

 number presents in form for populär use a phylogenetic chart of 

 the higher plants followed b}'' a key to the families considered. a 

 key to weeds, and, under the several families ke3'-s and characters 



