1/6 THE VASCULAR SYSTEM OF THE LEAF [CH. ix 



plants. The attachment of the roots is commonly upon the stele or the 

 meristeles of the axis ; but it may also be upon the basal part of the leaf- 

 supply, especially where the leaves are crowded, as in the case of Dryo- 

 pteris Filix-mas. These characters give little help in comparative study. 



BIBLIOGRAPHY FOR CHAPTER IX 



io8. Davie. The pinna-trace in the Ferns. Trans. Roy. Soc. Edin. Vol. 1, No. 1 1. 1914. 

 109. Davie. On the leaf-trace in some pinnate leaves. Trans. Roy. Soc. Edin. Vol. Hi, 



No. I. 1917. 

 no. Davie. Comparative list of Fern pinna-traces. Ann. of Bot. 1916, p. 233. 



111. Gwynne-Vaughan. Some climbing Davallias. Ann. of Bot. 1916, p. 495. 



112. Bertrand & Cornaille. Etudes, sur la Structure des Filicinees actuelles. Lille. 

 1902. 



113. Paul Bertrand. L'Etude anatomique des Fougeres anciennes. Progressus Rei 

 Bot. Vol. iv, p. 182. 



114. SiNNOTT. The Filicinean Leaf-Trace. Ann. of Bot. 1911, p. 169. 



115. Gwynne-Vaughan & Kidston. Origin of the adaxially-curved Leaf-Trace in 

 the Filicales. Proc. Roy. Soc. Edin. Vol. xxviii, 1908, No. 29. 



116. Bancroft. Rachiopieris cylindrica. Ann. of Bot. 1915, p. 513. 



117. Stenzel. Die Gattung 7>/<5m?«//-f. Bibliotheca Botanica. 1889. Heft 12. 



118. Tansley. Evolution of the Filicinean Vascular System, p. 114. New Phytologist 

 Reprints. No. 11. Cambridge. 1908. 



