286 



FILICALES 



[CH. 



fronds ; (ii) filmy species in New Zealand, New South Wales, 

 New Caledonia, and elsewhere. A plant of the small tree-fern 

 Todea Wilkesiana (Fiji, Samoa, and other islands) in the filmy- 

 fern house at Kew, to which my attention was drawn by my 

 friend Mr A. W. Hill, has a slender stem with the characteristic 

 leaf-scars exposed ; it presents a striking similarity to some of 

 the fossil species of Osmundaceae described in a later chapter. 



Schizaeaceae. (Schimea, Aneimia, Lygodium, Mohria.) 

 Sporangia borne singly and not in groups (sori), readily 



Fig. 221. A. Osmunda cinnamomea (after FauU). 



B. Todea barhara, p, phloem ; s, solerenchyma. 



C. Osmunda regalis (after Luerssen). 



D. Todea barbara (-j nat. size). 



recognised by the complete transverse apical annulus usually 

 one layer of cells deep, but occasionally two layers in depth on 

 the side opposite the line of dehiscence^ (fig. 224, B). Schizaea 

 (fig. 222) with the exception of one species in North America 



1 Prantl (81) PI. vii. fig. 104, C ; Zeiller (97) p. 215, figs. 7—10. 



