468 ^ CENTURY OF PROGRESS IN THE NATURAL SCIENCES 



Kratzkr, J. 



1918. Die verwandtschaftlichen Beziehungen der Cucurbitaceen auf Grund ihrer 

 Samenentwicklung. Flora, 110:275-343. 



Kribs, D. a. 



1930. Comparative anatomy of the woods of the Meliaceae. Amer. Journ. Bot., 17: 

 724-738. 



1935. Salient lines of structural specialization in the wood rays of dicotyledons. Bot. 

 Gaz., 96:547-557. 



1937. Salient lines of structural specalization in the wood parenchyma of dicotyle- 

 dons. Bull. Torrey Club, 64:177-186. 



Krohn, V. 



1935. Eine kritische Nachpriifung der Sympetalen des Konigsberger serodiagnos- 



tischen Stammbaums. Bot. Archiv, 37:328-372. 



KxJHN, Gertrud 



1928. Beitrage zur Kenntnis der intraseminalen Leitbiindel bei den Angiospermen. 

 Bot. Jahrb., 61:325-379. 



KUMAZAWA, M. 



1930. Studies on tlie structure of Japanese species of Ranunculus. Journ. Fac. Sci. 

 Tokyo Imp. Univ., sec. 3 (Bot.), 2:297-343. 



Lam, H. J. 



1936. Phylogenetic symbols, past and present (being an apology for genealogical 



trees). Acta Biotheor., 2:153-194. 

 1948a. Classification and the new morphology. Acta Biotheor., 8:107-154. 

 1948b. A new system of the cormophyta. Blumea, 6:282-289. 



1950. Stachyspory and phyllospory as factors in the natural system of the cormo- 



phyta. Svensk Bot. Tidskr., 44:517-534. 



1952. L' evolution des plantes vasculaires. Ann. Biol. Ill, 56:C. 57-C. 84. 



Langdon, LaDema M. 



1939. Ontogenetic and anatomical studies of the flower and fruit of the Fagaceae 

 and Juglandaceae. Bot. Gaz., 101:301-327. 



1947. The comparative morphology of the Fagaceae. I. The genus Nothofagus. Bot. 

 Gaz., 108:350-371. 



Laubengayer, R. a. 



1937. Studies in the anatomy and morphology of the Polygonaceous flower. Amer, 



Journ. Bot., 24:329-343. 



Lawrence, G. H. M. 



1951. Taxonomy of Vascular Plants, xii + 823 pp. New York: Macmillan and Co. 



1952. Morphology and the taxonomist. Phytomorphology, 2:30-34. 



Lawrence, Jxtlia R. 



1937. A correlation of the taxonomy and the floral anatomy of certain of the Boragi- 

 naceae. Amer. Journ. Bot., 24:433-444. 



Lawrence, W. J. C, J. R. Price, Gertrude M. and R. Robinson 



1939. The distribution of anthocyanins in flowers, fruits and leaves. Philos. Trans. 

 Roy. Soc. London, B 230:149-178. 



Leandri, J. 



1930. Recherches anatomiques sur les Thymeleac^es. Ann. Sci. Nat., ser. 10, 12: 

 125-237. 



