28 ARKIV FÖR BOTANIK. BAND 13. N:0 7. 



The identity of the Kurremölla specimens with Sageno- 

 pieris Mantelli appears at least very probable. The resem- 

 blance to typical specimens of the Wcalden species is ex- 

 pressed both in the shape of the leaflets and in their open 

 venation. There is especially a very close agreement with 

 the specimens figured by Ward ^ from the Lower Cretaceous 

 Shasta Flora of North America; but the specimens from the 

 European Wealden also appear to be very similar, though the 

 existing illustrations do not give any very clear idea of the 

 venation. 



Prof. Seward, in a recent paper, ^ remarks that the 

 Swedish specimens are »too incomplete to be referred to that 

 type with any degree of certainty». This imperfect nature 

 of the material is the only reason why the form has not here 

 been actually included in S. Mantelli: the identity with that 

 species, however, appears much more secure than is the 

 case with many other specimens generally accepted as be- 

 longing to it. The age of the present specimens is quoted 

 by Prof. Seward as probably Middle Liassic. In the paper 

 by Halle quoted above, the age of the Kurremölla beds is 

 stated to be not older than Middle Lias but possibly younger. 

 The closer examination of the flora now completed has given 

 the result that it is probably much younger, and whatever 

 its precise age may be, the evidences of Wealden affinities 

 have been steadily accumulating. The formerly supposed 

 Liassic age of the specimens can thus no longer be upheld 

 and consequently is n(^ reason against the very probable 

 identity with 8. Mantelli. 



Cteiiis sp. 



P}. 5, figs. 8—10. 



Ctenis, Nathorst: Om de växtförande lagren i Skånes kolförande 

 bildningar och deras plats i lagerföljden. Geol. Fören. Stockholm. Förh. 

 Bd 5. 1880. P. 284. 



Ctenia, Nathorst: Jordens historia. Del 2. 1893. P. 851. 



' Ward, L. F., Status of the Mesozoic floras of the United States. 

 Second Paper. U. S. Geol. Surv. Monographs. Vol. 48. P. 233. Pl. 65, 

 figs. 30—35. 



* Seward, A. C, Contribution to our knowledge of Wealden floras. 

 Quart. Journ. Geol. Soc. London. Vol. G9 1913. P. 88. 



