HJ. MÖLLER AND T. G. HALLE. FOSSIL FLORA OF S.E. SCANL\. 31 



The close resemblance of this form to the Wealden spe- 

 cies iV. schaiünburqensis (Dunk.) Nath. has already been 

 pointed out by Prof. Nathorst (1. c, 1909, p. 27). X. 

 schaumburgensis was first described h\ Dunker ^ as a species 

 of Pterophyllum and was later referred by Schimper ^ to 

 Anomozamites. In that genus the species remained, until it 

 w^as assigned by Nathorst ^ to its proper place, in Nilssoyiia. 

 After a close comparison of the Kurremölla form with typical 

 Wealden specimens of X . schaumburgensis, the best of which 

 are those figured by Schenk,* it has not been possible to 

 discover any difference, except that the former has more 

 rounded segments and possibly a little more slender rachis. 

 It is indeed possible that the two forms are identical, which 

 would appear more probable now that a number of Wealden 

 elements have been recognized in the Kurremölla flora than 

 at the time when the species was instituted. It appears best, 

 however, to retain for the present the name N. fallax given 

 to the Kurremölla form, while emphasizing its close agree- 

 ment with N. schaumburgensis. The latter is exclusively a 

 Wealden or Lower Cretaceous species of wide distribution, 

 being known not only from different districts in Europe but 

 also from Japan and North America. 



Nilssonia sp. 



PL 5, fig. 5. 



In addition to Nilssonia fallax Xath. there occurs at 

 Kurremölla a fragment of another species of that genus. The 

 specimen consists only of a single segment, almost square in 

 shape, with very dense veins (20 — 30 in a centimetre) which 

 are normally simple but show a couple of bifurcations. There 

 is a certain resemblance to N. densinervis (Font.) Berry, as 



* DcTNKER, W., Monographie der Xorddeutschen Wealdenbildung. 1846. 

 P. 15. Pi. 1, fig. 7; pi. 2, fig. 1; pi. 6, figs. 5—10. 



' ScHiMPER, W. P., Traité do paléontologie végétale. Tome 2. 1870 — 

 1872. P. 141. 



^ Xathorst, a. G., Beiträge zur mesozoischen Flora Japans. Denskschr. 

 Akad. d. Wissensch. Wien. Bd 57. 1890. P. 15. 



* Schenk, A., Die fossile Flora der nordwestdeutschen Wealdenforma- 

 tion. Palaeontographica. Bd 19. P. 231. PI. 33. 



