PLANT TAXONOMY IN AN AGE OF EXPERIMENT 589 



and apply it wisely toward the furtherance of our goals. Perhaps our chief 

 problem is to make ourselves and our students fully aware of the potential 

 complexity and richness of our subject and to train ourselves and them to 

 master the essential tools to pursue it most productively. 



Plant taxonomy has not outlived its usefulness: it is just getting under way 

 on an attractively infinite task. 



LITERATURE CITED 



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22:1-1030. 

 Constance, L. 1951. The versatile taxonomist. Brittonia 7:225-231. 



. 1953. The role of plant ecology in biosystematics. Ecology 34:642-649. 



. 1955. The systematics of the angiosperms. A century of progress in the 



natural sciences, 1853-1953. Pp. 405-483. California Academy of Sciences. 



San Francisco. 

 Core, E. L. 1955. Plant taxonomy, xiv + 459 pp. Prentice-Hall. Englewood Cliffs, 



N.J. 

 Darlington, C. D., and E. K. Janaki Ammal. 1945. Chromosome atlas of culti- 

 vated plants. 397 pp. Allen & Unwin. London. 

 and a. p. Wylie. 1955. Chromosome atlas of flowering plants, .xix + 519 



pp. Allen & Unwin. London. 

 Delay, Cecile. 1951. Nombres chromosomiques chez les phanerogames. Rev. 



Cytol. et Biol. Veget. Paris 12:1-368. 

 Johansen, D. a. 1950. Plant embryology: embryogeny of the Spermatophyta. 



xvi + 305 pp. Chronica Botanica Co. Waltham, Mass. 

 Lawrence, G. H. M. 1951. Taxonomy of vascular plants, xii + 823 pp. Macmillan. 



New York. 

 . 1955. An introduction to plant taxonomy, vii +179 pp. Macmillan. New 



York. 

 LeClercq, S. 1956. Evolution of vascular plants in the Cambrian. Evolution 10: 



109-114. 

 Maheshwari, p. 1950. An introduction to the embryology of the angiosperms. 



x + 453 pp. McGraw-Hill. New York. 

 Mason, H. L. 1950. Taxonomy, systematic botany, and biosystematics. Madroiio 



10:193-208. 

 TiscHLER, G. 1950. Die Chromosomenzahlen der Gefasspflanzen Mitteleuropas. 



263 pp. W. Junk. 'S-Gravenhage. 



