Floristik, Geographie, Systematik etc. 331 



Baker, R. T. and G. H. Smith. A research on the Euca- 

 lypts of Tasmania and their Essential oils. (Papers and 

 Proc. Roy. Soc. Tasmania. p. 139—209. 4 pl. 1912.) 



The present research shows that Tasmania possesses other 

 Eucalypts yielding oil of equal therapeutic value to that of Euca- 

 lyptus glohulus and also trees yielding phellandrene oils, now so 

 extensively used in mineral separations. It is pointed out how the 

 occurrence of terpene phellandrene in the oils of a majority of the 

 species is a character of some importance and one which may even- 

 tually be shown to have some significance in determining the 

 distribution of species. In the last section of the paper each species 

 is dealt with from a systematic, technical and chemical point of 

 view, and it is found that remarkable agreement exists between the 

 oil constituents of the leaf and the botanical features of the plant. 

 Three new species are described viz: E. taeniola, E. unialata and 

 E Rodwayi. E. M. Jesson (Kew). 



Benz, R. von, Schwarzkiefer. (Carinthia, 2. CHI. N. F. p. So- 

 SS. Klagenfurt 1913.) 



Pinus nigra Arn. hat in den Kasawanken am östlichen Sin- 

 ger berge ihr grösstes Verbreitungsgebiet und ist so stark verbreitet 

 wie P . süvestris. Die sonstige Verbreitung ist folgende (lauter alte 

 Bäume): Dobrova bei F erlach (früher häufiger), Posna im 

 Loibltale, im Waidischtale, am Rücken zwischen dem Ebri- 

 acher- und Trögenerbache (hier bereits gefällt). Schon seit 

 den 60-ziger Jahren wird P. nigra gepflanzt (Orte angegeben). Sie 

 leidet mehr durch Schneedruck, aber kommt besser vorwärts als 

 P. silvestris. Es scheint in den Karawanken eine natürliche Ein- 

 wanderung vom Süden her nur über das St. Annatal und durch 

 das Loibltal, vielleicht auch westlich und östlich der Koschuta 

 nachweisbar zu sein. Matouschek (Wien). 



Cambage, R. H., Development and distribution ot the 

 Genus Eucalyptus. (Journ. Roy. Soc. N. S. Wales. XLVII. 1. p. 

 18—59. 1913.) 



A comprehensive review is given of the physiographic, geolo- 

 gical and climatic conditions of S. E. Australia, which have 

 influenced the development and distribution of the genus Eucalyptus. 

 It is pointed out how the uplifts in miocene times have effected 

 changes in the tertiary flora; while by investigating the distribution 

 of Eucalypts particularly with regard to certain characters of the 

 anthers, leaves and essential oils, some uniformity is found, within 

 certain limits, in the development of these various characters. The 

 theory is put forward that the Eucalypts probably originated in the 

 northern or warm, rather than the southern or cold portion of 

 Australia. In the primitive type the anthers had parallel cells, the 

 leaves transverse venation and the chief constituent of the essential 

 oil was pinene. Later these characters became modified in response 

 to the surroundings and probably from other causes not properly 

 understood, among which may be the selection of different plant 

 foods owing to the class of geological formation which Supports the 

 growth of the genus and the amount of moisture present. 



E. M. Jesson (Kevr). 



