499 
the Monocotyledonous Leaf. 
Acknowledgements. 
In connexion with the present study, the writer has pleasure in acknow¬ 
ledging her indebtedness to the Newnham College Fellowship Committee 
for a grant for laboratory expenses, and to Miss E. R. Saunders, Director of 
the Balfour Laboratory, for permission to work there. She also wishes to 
express her thanks to Mr. R. Irwin Lynch, M.A., Curator of the Cambridge 
Botanic Garden, for supplying examples of the leaves of more than eighty 
genera, and also for his unfailing kindness in putting his wide knowledge at 
her disposal. For supplementary material she is indebted to the Director 
of the Royal Gardens, Kew, and also to Mrs. J. J. Lister, Miss Muriel 
Wheldale, and Mr. Rudolf Beer. To Mr. L. A. Boodle, of the Jodrell 
Laboratory, the writer wishes to express her gratitude for some valuable 
criticism. 
Balfour Laboratory, 
Cambridge. 
Alphabetical List of Memoirs cited. 
Arber, A. : See Sargant, E., and Arber, A. 
Arber, E. A. N., and Parkin, J. ( 1907 ) : On the Origin of Angiosperms. Linn. Soc. Journ. Bot., 
vol. xxxviii, 1907, pp. 29-80, four text-figures. 
Areschoug, F. W. C. ( 1878 ): Jemforande undersokningar ofver Bladets Anatomi. Lund, 1878, 
242 pages, eleven plates. 
Balicka-Iwanqwska, G. ( 1892 - 3 ): Contribution a l’etude anatomique et systematique du 
genre Iris et des genres voisins. Bibl. Universelle, Archives des sciences physiques et naturelles 
(Geneve), Per. Ill, tome xxviii, 1892, pp. 413-35; t. xxix, 1893, pp. 185-200, 225-41, three 
plates, fifteen text-figures. 
See also Chodat, R., and Balicka-Iwanowska, G. 
Bary, A. de ( 1884 ) : Comparative Anatomy of the Vegetative Organs of the Phanerogams and 
Ferns. Translated by F. O. Bower and D. H. Scott. Oxford, 1884, xvi + 659 pages, 241 
figures. 
Berger, A. ( 1908 ) : Liliaceae—Asphodeloideae—Aloineae, in Das Pfianzenreich, herausgegeben von 
A. Engler, iv. 38, iii. 2. Leipzig, 1908, 347 pages, 817 text-figures. 
Bitter, G. ( 1897 ) : Vergleichend-morphologische Untersuchungen fiber die Blattformen der 
Ranunculaceen und Umbelliferen. Flora, vol. lxxxiii, 1897, pp. 223-303, thirty-one text- 
figures. 
Bower, F. O. ( 1884 ): On the Comparative Morphology of the Leaf in the Vascular Crypto¬ 
gams and Gymnosperms. Phil. Trans. Roy. Soc., London, vol. clxxv, 1885 (for 1884), 
pp. 565-615- 
- ( 1888 ) : A Course of Practical Instruction in Botany. 2nd edition, London, 1888, 
ix + 473 + xlvi pages, fourteen text-figures. 
Brandis, D. ( 1907 ): Remarks on the Structure of Bamboo-Leaves. Trans. Linn. Soc., London, 
Ser. 2, Bot., vol. vii, 1904-13, pp. 69-92, four plates. 
Brebner, G. See Scott, D. H., andJlREBNER, G. 
Briquet, J. ( 1897 ): Examen critique de la theorie phyllodique des feuilles entieres chez les 
Ombelliferes terrestres. Bull, de l’Herbier Boissier, tome v, 1897, pp. 424-43, seven text- 
figures. 
