36 ART. 8. — H. YABE. 



nation of better material which showed the pinnules with bifur- 

 cating lateral veins. Therefore, Sewakd^* thinks that possibly 

 the fertile pinnae described by Nathoest should be kept as a 

 species distinct from the sterile examples, and referred to Weich- 

 selia (Lonchopteris) Blantelli. In a more recent publication, 

 Sewaed^^ has placed the specimens represented in figs. 2-6 of 

 Nathorst's paper under C. Browniana, considering them as 

 distinct from the others for which he retains the name of P. 

 Oeyleriana. 



The present writer has mentioned above that the P. exilis 

 of Prof. YoKOYAMA (P. exiliformis Geyler) shows some slight 

 differences from C. koraiensis, on account of wdiich the Japanese 

 species approaches to, or more likely is identical with, C. Brow- 

 niana, as YoKOYAMA and Seward had already pointed out. 



The fertile pinnae of P. Browniana figured by Prof. Yoko- 

 YAMA and those of P. Ditnlcerl of Fontaine"" from the Potomac, 

 strongly suggest those of the living Aspidium in the form and 

 mode of attachment of the sori, so that the latter author even 

 went so far as to bring his P. Bunkeri under the genus Aqyidium, 

 although according to the writer's opinion these characters not 

 seem to jiistify such an assumption. 



Comparing the fertile pinnules of C. koraiensis with those 

 of the two above mentioned, some differences still remain ; also 

 it is not wholly impossible, that the form belongs to a genus 

 entirely different from the latter two. 



To sum up, at present it seems advisable to treat the Korean 

 form, as a new species of Gladophlehis, a genus created for the 



1) BjiWARD : Weaklen Flora, I, i). 116. 



2) Seward : Fossil Flora of the Cape Colony, p. 12. 



3) Fontaine: Potomac Flora, p. 101, pi. XXII., fig. 9. 



