l] WHAT IS PLANT GEOGRAPHY ? 23 



Graebner, p. (1910) : Lehrbuch der allgemeinen Pflanzengeographie nach 

 entzvickhmgsgeschichtlichefi und physiologisch-dkologischen Gesichts- 

 punkten mit Beitrdgen von Paul Ascherson (Quelle & Meyer, Leipzig, 

 pp. viii + 303). A general, illustrated account of the history and 

 composition of various floras and vegetation-types, paying due regard 

 to their ecological bases. 



Hayek, A. (1926) : AUgemeine Pflanzengeographie (Borntraeger, Berlin, 

 pp. viii + 409 and 2 additional maps). A more modern account 

 along similar general lines to the last, but illustrated by only a very 

 few diagrams and maps. 



Diels, L. (1929) : Pflanzengeographie, third edition (Grunter, Berlin & 

 Leipzig, pp. 1-159 and additional map). Useful as presenting a 

 largely modern account in outline of many aspects of the subject 

 in handy pocket form. Later editions (not seen) have since appeared. 



RuBEL, E. (1930) : PflanzengeseUschaften der Erde (Huber, Bern-Berlin, 

 pp. viii + 464 and map). Describes and illustrates the main plant 

 communities and vegetation-types of the world. 



Warming, E., & P. Graebner (1933) : Lehrbuch der okologischen Pflanzen- 

 geographie, fourth edition (Borntraeger, Berlin, pp. viii -^ 1158). A 

 valuable illustrated work dealing particularly with ecological and 

 vegetational aspects. 



ScHiMPER, A. F. W. (1935) : Pflanzengeographie auf physiologischer 

 Grundlage, ' third ' edition, revised by F. C. von Faber (Fischer, Jena, 

 vol. I, pp. XX -f 588, and vol. II, pp. xvi + 589-1613 and 3 additional 

 maps). An illustrated, extensive work weighing about 10 lb. and 

 dealing mainly with the natural flora and vegetation of diflFerent 

 zones and regions, after some consideration of ecological factors and 

 principles. Generally reliable in those aspects of our subject with 

 which it deals. Although called (in German) the third edition, this 

 was in reality the second, as the so-called second edition was 

 merely a reprint of the first edition. 



Alekhin, V. V. (1944) : [Geography of Plants], in Russian only (State 

 Publisher, Moscow, pp. 1-455 and 2 maps). An illustrated account 

 of many of the distributional and ecological aspects of the subject. 



WuLFF, E. V. (1944) : [Historical Plant Geography : history of the floras 

 of the zvorld], in Russian only (Akademiya Nauk SSSR, Moscow- 

 Leningrad, pp. xix + 546). This is the second volume, mainly on 

 the origins of the floras of the different regions of the world, of a 

 projected three-volume work of which the first was translated into 

 English {see above) and the third was apparently never completed, 

 the author being killed in 1941 during the siege of Leningrad. 



Gaussen, H. : Geographic des Plantes, second edition (Colin, Paris, pp. 

 1-224, 1954). Gives a brief but useful account of many aspects of 

 the subject. 



