40 Origin and Development of the Compositee. 
81. Tournefort, J. P. See Bib. I, 84. 
82. Traverso, G. B. Alcune anomalie dei flori ligulati di Chrysanthemum 
Leucanthemum, L. Bull. soc. bot. ital., 1911, p. 283. 
83. Tr£cul, A. See Bib. II, 67. 
84. Trow, A. H. On the Inheritance of certain Characters in the Common 
Groundsel, Senecio vulgaris L., and its Segregates. 
Jour, of Genetics, Vol. II, 1912. 
85. Uexkull-Gyllenband, M. V. See Bib. II, 69. 
86. Vaillantus. S. See Bib. II, 70. 
87. Vries, H. de. Species and Varieties. Chicago, 1906. 
88. ,, The Mutation Theory. London, 1911. 
89. Weber, C. O. Verhandl. des nat. hist. Vereins der preuss. Rheinlande 
und Westphalens. Bd. XVIII. p. 333, 1860. 
90. Wernham, H. F. See Bib. I, 88. 
91. Wettstein, R. R. v. See Bib. I, 89. 
92. Willis, J. C., and Burkill, I. H. Flowers and Insects in Great Brit., 
(a) Annals of Bot., Vol. XVII, 1903; and (b) Vol. 
XXII, 1908. 
93. Willis, J. C. The Origin of the Tristichaceae and Podostemaceae. Ann. 
Bot., XXIX, 1915. 
94. ,, ,, Further Evidence for Age and Area. Ibid, Vol. XXXI, 
1917. 
95. Willstatter, R. Untersuchungen fiber die Anthocyane. Abst. Bot. Gaz., 
Vol. LXIV, p. 255, 1917. 
96. Worsdell, W. C. Abnormal “ Flowers” of Helenium autumn ale, L. Jour. 
Roy. Hora. Soc., n. s., Vol. XXVII, p. 943, 1903. 
97. „ ,, Principles of Plant-Teratology, Vol. II. London, 1916. 
98. Yapp, R. H. Fruit dispersal in Adenostemma viscosum. Annals of Bot., 
Vol. XX, p. 311, 1906. 
