— 64 - 



obliquely towards the apex or the margin of the segment. And so we get 

 the retroflexed and non-retroflexed, pseudo-davallioid and pseudo-deparioid . 

 sori of our herbarium specimens of Lecanopteris. 



I have treated 1 or some segments of all our specimens in the manner 

 mentioned and, after having examined those segments, I was able to fix 

 the hitherto described species as far as we possess dried material, to which, 

 for the time being, i add as dubious species those of which 1 have seen 

 no material. — The striking differences between the species are demonstrated 

 in tab. IX of this Bulletin. 



a. Sori superficial on the outgrowths (lobules or teeth) of the fertile segments. 



(9) L. Macleayi (?). 



aa. Sori immersed in cymbiform, cupuliform, saccate or navicular outgrowths 

 (lobules or teeth) of the fertile segments. 



b. Soral cavities proportionally broadly cymbiform or cupuliform, not twisted, 

 i.e. with the mouth directed upwards or downwards (when dried), 

 c. Soriferous outgrowths oblong, remote, rather separated by more 

 than their own width. (1) L- carnosa. 



cc. Soriferous outgrowths semiorbicular, approximate, rather separ- 

 ated by less than their own width. (2) L. Nieuwenhuisii. 

 bb. Soral cavities proportionally narrowly saccate or navicular, very gen- 

 erally twisted, i. e. with the mouth facing obliquely the margin or 

 the apex of the segments (when dried). 



c. Cavities saccate, about as deep as long. (5) L. saccata. 



cc. Cavities navicular, much less deep than long. 



d. Sori occupying the upper part of the outgrowths, apparently 

 stalked when seen from the side. 



e. Outgrowths horizontally spreading (in dried specimens). 



(7) L. philippinensis. 

 ee. Outgrowths oblique or subparallel to the margin of the 

 segments (in dried specimens). (8) L. deparioides (?). 

 dd. Sori occupying the whole of the outgrowths or even reaching 

 'to beyond their bases. 



e. Outgrowths as a rule not retroflexed (in dried spec- 

 imens); areolae with only fine included venules. 



(6) L. Curtisii. 



ee. Outgrowths as rule retroflexed (in dried specimens), or the 

 areolae (at least of the lower half of the segments) provided 

 with a thick recurrent intermedial vein from which the finer 

 included venules are spreading in various directions. 

 /. Texture thick. (4) L. davallioides. 



//. Texture thin. (3) L. incurvata (?). 



