Floristik, Geographie, Systematik etc. 103 



plantation of Larch, Spruce and Scots Pine. The main object is to 

 show that afforestation of high moorlands in Britain may be suc- 

 cessfuUy and profitably carried out. but the paper contains useful 

 information on the growth of these trees at high altitudes and under 

 somewhat severe climatic conditions. The plantation (about 200 acres) 

 extends from 900 feet to above 1500 feet (460 metres) in the 

 English Lake District where the greatest adjoining elevations 

 are from 600 m. to 770 m. The effect of altitude on growth is 

 shewn by curves of height-growth, girth, and volume. In each 

 case increase in altitude brings diminution in these measurements, 

 there being a marked reduction in the higher zone above 380 me- 

 tres, where exposure to wind is greatest. Natural regeneration of 

 Larch took place abundantly on adjoining slopes amongst Calluna. 



W. G. Smith. 



Hobbins, W. W., Climatology and Vegetation in Colo- 

 rado. (Bot. Gaz. XLI. p. 256—280. fig. 1—7. April 1910.) 



The author describes first the topography of the State, the 

 masselevations, drainage Systems, general precipitation, seasonal 

 distribution of rainfall, the temperature, frost and wind factors in 

 the text and by Charts. Under the head of Vegetation is considered 

 the influence of the climate on the different types of Vegetation 

 found on the plains, eastern lower foot hüls and north eastern 

 Upper foot hills, mountains, mountain parks, western sage plains 

 and lower foot hills. The western part of the State being drier has 

 a more xerophytic Vegetation than that of the eastern part. 



John W. Harshberger. 



Rouy, G., Sur quelques Scrofula riacees du Sud-Est de la 

 France et sur deux Salicacees d'Alsace. (Bull. Soc. bot. 

 France. LVII. p. 195—201. 1910.) 



Hybrides nouveaux: 1° X P^dicularis cmnberiensis Rouy [P.gy- 

 roflexa Vill. X Barrelieri Reichb.), dont les parents sont ceux attri- 

 iDues au P. delphinata Stein inger par son auteur. 



2° X P- Bland Rouy et Faure (P. cenisia Gaud. X Barrelieri 

 Reichb.), dont la diagnose se rapporte ä celle du P. delphinata 

 Steininger. 



3^^ X P- Gillotana Rouy et Faure (P. cenisia Gand. X gy^o- 

 flexa Vill.). ^ 



40 X P- alpicola Rouy et Faure {P. Barrelieri X tuherosa L.). 



L'auteur decrit en outre deux Salix hybrides: X •^- /ss/er/ Rouy 

 (S. aiirita X hastata Wimm.), X ^- Mantsii Rouy (5. incana X ^^^' 

 gricans Mantz) et une nouvelle ^sous-espece, trouvee en Savoie, du 

 Linaria vulgaris, le L. Perrieri Rouy. J. Offner. 



Simmons, H. G., Floran och Vegetationen i Kiruna. (Ve- 



tenskapliga och praktiska Undersökningar i Lapland, anordnade 



af Luossavaara-Kiirunavaara Aktiebolag. 403 pp. 22 Tafeln, und 



1 Karte. Mit engl. Zusammenfassung. Nordiska Bokhandeln, 



Stockholm, 1910.) 



Der durch seinen Grubenbau bekannte Ort Kiruna ist in 



Torne Lappmark bei 67°50' n.Br. gelegen. Das in den Jahren 



1908 und '09 untersuchte, etwa 10 km^ grosse Gebiet ist zum grös- 



sten Teil zur ßirkenregion zu zählen; nur der höchste Teil von 



Kiirunavaara gehört zur regio alpina. 



