Floristik, Geographie, Systematik etc. 171 



Flora Danica (tab. 2772) has a very good illustration of this new 

 species which was named P. acadiense, and consequently he sug- 

 gests that it occurs also on the other side of the North Atlantic. 

 In the present paper he reprints the description of it and gives the 

 differences between it and P. Raji, and asks for examination of 

 specimens from northwestern Europe. ~ In a postcript the pre- 

 sent abstractor adds that from an examination of the specimens of 

 "P. RajV in the Copenhagen herbarium and comparison with spe- 

 cimens of P. acadiense sent by Prof. Fernald, it becomes evident 

 that the so-called P. Raji from the shores of the Baltic (Denmark, 

 Sweden and Li vi and) is in reality P. acadiense, and that speci- 

 mens from Arctic Norway probably also must be referred to it. In 

 Europe the true P. Raji seems to be confined to the coasts along 

 the English Channel and the neighbouring tracts. 



C. H. Ostenfeld. 



Hemsley, W. Botting Flora of Seychelles and Aldabra. 



(Journ. Bot. LIV. N^ 640. Suppl. II. p. 1—16. April 1916. N«. 641. 



p. 17—24. May 1916. W 648. p. 361—363. Dec. 1916.) 



The following are the new Phanerogamia, chiefiy of the Fercy 

 Sladen Trust Expedition, which have been described in anticipation 

 of the complete list of the species and of the report on the general 

 geography of the constituents of the flora, under preparalion on 

 behalf of the Trustees of the above mentioned expedition. Some 

 emendations in synonymy are also included in the present publica- 

 tion. Macrua Dupontii, Aphloia seychellensis, A. sessiliflora {Mauritius), 

 Pittosporum Wrightii, Erythroxylon acranthurrij Impatiens Thomas- 

 setii, Ochna Fryeri, Smythea Dupontii, Tephrosia aldabrensis, J. R. 

 Drumm. et Hemsl., T. subamoenaj J. R. Drumm. et Hemsl., Cassia 

 aldabrensis, Pithecolobium ambigiium, Parindrium Gardinen, Wei- 

 hea Thomassetii, Begonia Seychellen sis, Randia lancifolia, nom. nov. 

 {Psychotria Wrightii, Baker), Pavetta supra- axillaris, Psychotria pal- 

 lida, P. sathura Fryeri, Vernonia aldabrensis, Gynura seychellensis, 

 nom. nov. {Senecio sechellensis, Baker), Jasminum aldabrense, Seca- 

 mone Fryeri, Mimusops sechellarum, nom. nov. {Imbricaria sechella- 

 ruin, Oliver), M. decipiens, nom. nov. {M. sechellensis), M. Thomas- 

 setii, Northea confusa, Plumbago parvifolia. 



The last part of this paper does not appear as Suppl. II but is 

 included in the matter of the Journal. The circumstances causing 

 the Interruption of the Supplement is there explained, and if and 

 when the Supplement is continued these pages will be included in it. 



E. M. Cotton. 



Hornig, G., Morhologische Beobachtungen aus dem Ge- 

 biete der Rokitnosümpfe. (Naturw. Wochenschr. N. F. N" 50. 

 p. 712—713. 1916.) 

 Von der Höhe der das Gebiet durchziehenden Dünenzüge senkt 

 sich das Land in 2 Stufen zum Sumpfe. Die erste wird von sandi- 

 gen Feldern eingenommen, auf denen Flachs, Gerste und Kartoffeln 

 stehen. Auf den Dünen gibt es schöne Kiefern; mit Weiden trachtet 

 man, die Dünen festzulegen. Die Moränenzüge sind für den Acker- 

 bau wichtig. Je weiter man nach dem Süden kommt, desto mehr 

 Mischwald in der Ebene (Eiche, Rotbuche, Birke, Pappel); in der 

 Sumpfzone Erlen und Weiden. Unterholz sind Arten von Vaccinium, 

 Andromeda, Sedum. Ueberschwemmungen im Frühjahr verändern 



