470 -* CENTURY OF PROGRESS IN THE NATURAL SCIENCES 



Lyon, H. L. 



1905. The embryo of the angiosperms. Amer. Nat., 39:13-35. 



MacDuffie, R. C. 



1921. Vessels of the Gnetalean type in angiosperms. Bot. Gaz., 71:438-445. 



Maheshwari, p. 



1937. A critical review of the types of embryo sacs in angiosperms. New Phytol., 



36:359-417. 



1939. Are the angiosperms polyphyletic? Chron. Bot., 5:417-418. 



1945. The place of angiosperm embryology in research and teaching. Journ. Indian 



Bot. Soc, 24:25-41. 



1948. The angiosperm embryo sac. Bot. Rev., 14:1-56. 



1949. The male gametophyte of angiosperms. Bot. Rev., 15:1-75. 



1950. An Introduction to the Embryology of Angiosperms. x + 453 pp. New York: 



McGraw-Hill. 



Mangenot, G. 



1952. L'evolution de I'ovule du pistil et du fruit. Ann. Biol., ser. 3, 56:C. 149-C. 162. 



Manning, W. E. 



1938. The morphology of the flowers of the Juglandaceae. I. The inflorescence. Amer. 



Journ. Bot., 25:407-419. 



1940. The morphology of the flowers of the Juglandaceae. II. The pistillate flowers 



and fruit. Amer. Journ. Bot., 27:839-852. 

 1948. The morphology of the flowers of the Juglandaceae. III. The staminate flowers. 

 Amer. Journ. Bot., 35:606-621. 



Markgraf, F. 



1936. Bltitenbau und Verwandtschaft dei den einfachsten Helobiae. Ber. Deutsch. 

 Bot. Ges., 54:191-229. 



Martens, P. 



1947. Le graine et le tube pollinique; reflexions sur les caracteres des phanerogames. 

 Bull. Acad. Roy. Belgique Sci., ser. 5, 33:919-943. 



1951. Les Prephanerogames et le probleme de la graine. Cellule, 54:103-132. 



Martin, A. C. 



1946. The comparative internal morphology of seeds. Amer. Midi. Nat, 36:513-660. 



Mason, H. L. 



1950. Taxonomy, systematic botany, and biosystematics. Madrono, 10:193-208. 



Mattfield, J. 



1938a. Das morphologische Wesen und die phylogenetische Bedeutung der Blumen- 



blatter. Ber. Deutsch. Bot. Ges., 56:86-116. 

 1938b. Ueber eine angebliche Drymaria Australiens nebst Bemerkungen liber die 



Staminaldriisen und die Petalen der Caryophyllaceen. Beih. Repert. Sp. Nov., 



100:149-164. 



Matthews, J. R. 



1941. Floral morphology and its bearing on the classification of angiosperms. Trans. 



and Proc. Bot. Soc. Edinburgh, 33:69-82. 



Matthews, J. R., and E. M. Knox 



1926. The comparative morphology of the stamen in the Ericaceae. Trans, and Proc. 

 Bot. Soc. Edinburgh, 29:243-281. 



