74 INTRODUCTION TO PLANT GEOGRAPHY 



remembered that authors rarely agree as to the status and disposition, 

 or even the Hmits, of every group. 



An attempt to cover all the groups is made in A. Engler & K. Prantl's 

 Die natilrlichen Pflanzenfamilien, second edition (Engelmann, Leipzig, 

 or latterly Duncker & Humblot, Berlin, numerous volumes from 1924), 

 and, in greater detail, in A. Engler's very incomplete Das Pflanzenreich 

 (formerly published by Engelmann, Leipzig). Also primarily under 

 Engler's name are published from time to time revised editions of the 

 handy Syllabus der Pflanzenfamilien (Borntraeger, Berlin), giving an out- 

 line of the entire plant kingdom. 



For further details the following treatments of the various groups 

 should be consulted : 



C. E. Clifton. Introduction to the Bacteria, second edition (McGraw- 

 Hill, New York etc., pp. xiv -f 558, 1958). 



K. V. Thimann. The Life of Bacteria : their Grozvth, Metabolism, and 

 Relationships (Macmillan, New York, pp. xviii + 775, 1955). 



F. E. Fritsch. The Structure and Reproduction of the Algae (Cambridge 



University Press, Cambridge, Eng., vol. I, pp. xvii -f 791, 1935, 

 and vol. II, pp. xiv -|- 939 and 2 additional maps, 1945). 



G. M. Smith (ed.). Manual of Phycology (Chronica Botanica, Waltham, 



Mass., pp. xii -f 375, 1951) ; also Algae. 



E. A. Gaumann & F. L. Wynd. The Fungi (Hafner, New York & 



London, pp. 1-420, 1952). 



C. J. Alexopoulos. Introductory Mycology (Wiley, New York, pp. 

 xiii + 482, 1952) ; also Fungi. 



A. L. Smith. Lichens (Cambridge University Press, Cambridge, Eng., 

 pp. xxviii -f 464, 1921). 



F, Verdoorn (ed.). Manual of Bryology (NijholT, The Hague, pp. 



ix + 486, 1932) ; Bryophytes. 



F. Verdoorn (ed.). Manual of Pteridology (Nijhoff, The Hague, pp. 



XX -f 640, 1938) ; Pteridophytes. 



G. M. Smith. Cryptogamic Botany, vol. II, Bryophytes and Pteridophytes, 



second edition (McGraw-Hill, London etc., pp. vii -f 399, 1955). 



C. J. Chamberlain. Gymnosperms : Structure and Evolution (University 

 of Chicago Press, Chicago, 111., pp. xi -^ 484, 1935). 



G. H. M. Lawrence. Taxonomy of Vascular Plants (Macmillan, New 

 York, pp. xiii + 823, 1951); Angiosperms, etc. 



