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BOOK REVIEWS 



The Classification of Dicotyledons* 



Alfred Gundersen 



During the past fifty years two great systems have be- 

 come widely established in different countries, namely those of 

 Bentham and Hooker's Genera Plantarum and of Engler and 

 Prantl's Natiirliche Pflanzenfamilien. During the twentieth 

 century a number of suggestive expositions, more or less de- 

 tailed, relating to the classification of the higher plants have 

 been made; among others, in Austria by Wettstein, in Denmark 

 by Warming, in Germany by Hallier, in Holland by Lotsy, in 

 France by Van Tieghem and by Vuillemin, in England by Arber 

 and Parkin, by Wernham and in America by Bessey and others. 



The new works by Rendle, of the Department of Botany of 

 the British Museum, and by Hutchinson, of the Herbarium of 

 the Royal Botanic Gardens, Kew, may be considered modern 

 adaptations of the two classic systems. These comprehensive 

 works remind us that systematic botany is not all confined to 

 the endless question of species. Rendle's work follows Engler 

 much more closely than Hutchinson follows Bentham and 

 Hooker. On following pages the orders of Rendle and of 

 Hutchinson are compared with those of the 9-ioth edition of 

 the Engler-Gilg Syllabus. 



Engler-Gilg 1924 Rendle 1925 



ARCHICHLAMYDEAE MONOCHYLAMYDEAE 



Verticillatae 

 Piperales 



Salicales Salicales 



Garrj'ales Garryales 



Myricales Juglandales 



Balanopsidales Julianiales 



Leitneriales Fagales 



Juglandales Casuarinales 



Batidales Urticiflorae 



Hutchinson ig26 



ARCHICHLAMYDEAE 



Magnoliales Theales 



Anonales Myrtales 



Laurales Guttiferales 



Ranales Tiliales 



Berberidales Malvales 



Aristolochiales Malpighiales 



Piperales Euphorbiales 



* Rendle, Alfred Barton. The Classification of Flowering Plants, 11, Dicoty- 

 ledons xix — 636 pp., 279 fig., Cambridge (England) University Press, 1925. 



Hutchinson, J. The Families of Flowering Plants, i Dicotyledons, Arranged 

 According to a New System Based on Their Probable Phylogeny. xi — 328 pp., 

 264 fig., numerous maps. Macmillan & Co., London, 1926. 



