l] WHAT IS PLANT GEOGRAPHY? 21 



edition ' (Dutton, New York, pp. xv + 298, 1948). A stimulating 

 and usually reliable outline of many aspects of biogeography. The 

 so-called second edition, although recent, is practically a reprint that, 

 unfortunately, fails to remedy some misconceptions and to correct 

 errors particularly in those chapters for which the original author 

 was not responsible. 



WuLFF, E. V. (1943) : An Introduction to Historical Plant Geography, 

 translated by E. Brissenden (Chronica Botanica, Waltham, Mass., 

 pp. XV -f 223). Useful in elucidating the origin and development 

 of floras as opposed to their composition, ecology, and other aspects. 

 A succeeding volume was published later in Russia (see below). 



Cain, S. A. (1944) : Foundations of Plant Geography (Harper, New York 

 & London, pp. xiv + 556). An important though rather technical 

 survey of the history and interpretation of many phenomena of 

 vascular plant distribution on land. Does not deal with aquatic 

 habitats or lower groups of plants, and is professedly not a descriptive 

 plant geography. 



Croizat, L. (1952) : Manual of Phytogeography (Junk, The Hague, pp. 

 viii + 587 and 106 additional illustrations). Considers plant geo- 

 graphy simply the study of plant dispersal, being * that branch of 

 botany which integrates plant-migrations in time and space '. A 

 large part (pp. 68-399) i^ occupied by treatment of the * intercon- 

 tinental dispersal ' of various (mainly tropical) Angiosperms. Often 

 opinionated and sometimes crotchety : nor is the coverage in accord- 

 ance with the subtitle which claims the work to be ' an account of 

 plant-dispersal throughout the world '. 



Good, Ronald (1953) : The Geography of the Flowering Plants, second 

 edition (Longmans, London etc., pp. xiv -\- 452). An illustrated 

 manual of the distributions of flowering plants and the factors 

 controlling them ; does not deal with vegetation or with lower 

 plants. Nevertheless a valuable work, and widely considered the 

 standard one on the floristic side of the subject. The second edition 

 should be used rather than the first, which was published in 1947. 



TuRRiLL, W. B. (1953) : Pioneer Plant Geography : the phytogeographical 

 researches of Sir Joseph Dalton Hooker (NijhoflF, The Hague, pp. 

 xii -)- 267). Readable and instructive, with up-to-date comments, 

 as well as historically interesting. 



In other languages : 



Humboldt, A., & A. Bonpland (1805) : Essai sur la Geographic des 

 Platites ; accompagne d'un tableau physique des regions equinoxiales 

 (Paris, pp. i-xii -\- 13-155 and map). One of the main foundations 

 of our subject, followed by a German edition in 1807, and also by 

 kindred works in various languages ; of great historical interest. 



ScHOUW, J. F. (1822) : Grundtraek til en almindelig Plantegeographie 



