--^ fi 



Fig- 594- .-/= diagram of the vascular system of the rhizome of Odontosoria {Davallia) 

 acuUata (L.) J. Sm., including a node and the base of a leaf-trace, //?' = internal phloem. 

 The external phloem is not indicated. The upper surface of the rhizome faces the 

 observer. B = Tapeinidium {Davallia) pinnatuui (Cav.) C. Chr. Diagram as in^. The 

 vascular system is curved so that the two cut ends face the observer obliquely, //i' = 

 internal phloem. (After Gwynne-Vaughan.) 



Fig. 595. A — C=Microlepia spelitncae {L.)ls[oore. ^ = secondary pinna, ^ = tertiary, C = part of 

 a segment with sorus and indusium. D — G= Odontosoria Presl. £> — F=0. bifida (Kaulf.) J. Sm., 

 Z> = tertiary pinnule, with venation and sori, j£' = leaf-tooth with indusium, 7^= the same with 

 indusium removed, to expose the sorus. G—0. aculeata (L.) J. Sm., primary pinna. H,J= Tapei- 

 nidiitni (JVibelia) piiinatiiin (Cav.) C. Chr. ,y= primary pinna, /r''=part of it with venation and sori. 

 A—C, after Diels; D—F, after Baker in PL Bras.; H,/, after Fee.) 



D. H. HILL LIBRARY 



