FROM KÖZÜKE, KU, AWA, AND TOSA. 227 



cntalis Heer (Yokoyaina, Jurassic Plants, PI. XIV, figs. 4-9). These 

 leaves are in ireneral larirer than those from Echizen, some attaining" 

 4 cm. in breadth and up to 20 cm. in lenuth. In this respect they 

 resemble more tliose of Siberia floured i)v Ileer. Ihit tlie veins in the 

 Ryöseki plant are doubly as coarse, tliere being- only '2 in a millimeter, 

 wiiile in the other we can count 4 in the same space. Therefore we 

 have here t(^ deal with nnother species of Nilssonia, and indeed with A"". 

 Joluistrupi Ileer from the Lower Cretaceous of Greenland, which agrees 

 exactly with the Japanese form both in number of veins and also in 

 the more oval shnpe of the leaves. 



Nihsonia hohciiiica A^elenov. (die Gymnos])ermen d. bohm. Kreide- 

 form, p. 11, pi. II, fig. 25-28) seems also to be a very nearly related 

 species. It has however the leaves longer and narrower. 



Loc. — Kataji and Tögodani ; rare. 



22. Nilssonia schaumburgensis Dkr. 

 PI. XX, Figs. 12, 14. PI. XXI, Fig. 14. PI. XX 11, Figs. 5-7. 



yH.'i.'KDii« vf. scluntmhuiijoisiii. — Natliorst, p. 5, pi. I, figs. 6-9(/, p. 9, 13. 



Pteroiiltijllum scliaionhuiyetise. — Dnnkei", Ueb. d. Norddeutscli. Waldertlion. Progv. 

 d. liobereu Gewerbesclinle in Casse], p. IIG. Monogr. d. Norddeutscb. AVealdeii- 

 fonu., p. 15, pL I, fig. 7, 11, 1, YI, 5-10. Ettiugsbausen, Beitr. z. näbereii Keiiiitn. 

 d. Flora d. Wealdeiipeiiode, p. 22. 



AiKnnozdriiitca scJudDiibidr/oisiv. — Scbenk, Die Flora d. Nordwestdeutscb. AVeal- 

 deuform. p. 231, pi. XXXIII, figs. 1-9. 



X^athorst has rightly referred this })lant to the well known Weal- 

 den form Xilssoitta .%-]tauiiiJ)ur(jcnsis Dkr. sp. The only difference exist- 

 ing between the Japanese and European forms is the entire absence of 

 seg-ments with rounded at)ex, the se2:ments here beinij' more or less 

 pointed in all the specimens. But as there are also such forms in tlie 

 European plant (ex. gr., figs. 4, 7, PL XII of Schenk), so there is no 



