HJ. MÖLLER AND T. G. HALLE, FOSSIL FLORA OF S.E. SCANIA. 21 



Equisetites Mobergii Möller. 



PI. 2, figs. 21—23; pl. 3, figs. 1—8. 



Equisetum, new species, Näthoest: Om de växtförande lagren i Skå- 

 nes kolförande bildningar etc. Geol. Fören. Stockholm Förh. Bd. 5. 1880. 

 P. 284. 



Equisetites Mobergii, Möller in Halle: Zur Kenntnis der mesozoischen 

 Eqiiisetales Schwedens. K. Svenska Vet. Akad. Handl. Bd 43. N:o 1. 

 1908. P. 26. PI. 4, figs. 29—37. 



One of the most characteristic plants at Kurremölla is 

 an Equisetites which has already been described by Möller 

 (Halle, 1. c.) as a new species, E. Mobergii Moll. A more 

 complete description of this species, which seems to come 

 fairly near to some known forms, will be given here. 



Stems articulate with smooth internodes, sometimes 

 showing a very fine sculpture but no longitudinal ribs or 

 furrows. On the impressions the stems measure 4 — 7 mm. in 

 breadth; the length of the internodes varies between 10 and 

 25 mm. The leaf-sheaths are closely adpressed to the stem; 

 their teeth can be traced to a length of 3 — 7 mm. To the 

 greater part of their length, the teeth are connected with 

 each other by means of the tissue of the commissural furrows. 

 The free portions of the teeth are rather short, 3 — 4,5 mm. 

 long at the most, gradually tapering, with acute apices. The 

 number of the segments of each sheath is generally 8 — 10 

 on the impression, the whole number thus 16 — 20. 



This form has been kept here under the name Equisetites 

 Mobergii, because it does not agree exactly with any known 

 species, but it is evident that it comes very near to a couple 

 of forms previously described. The resemblance to E. Mün- 

 steri noted in the first description of the species (1. c.) 

 appears to be rather remote: the absence of external ribs, 

 the more numerous, narrow and pointed teeth are important 

 differences. There is a much closer agreement with two 

 younger species, viz. E. Bunburyanus Zign.^ an E. LyelH 

 Mant.^ E. Mobergii seems to occupy an intermediate position 

 between these two species. E. Bunburyanus, from the Ba- 

 thonian of Italy, is perhaps the less closely related form. 



^ ZiGNO, A. DE, Flora fossilis formationis oolithicae. Vol. 1. Padova. 

 1856—1868. P. 62. PI. 3, figs. 2, 4—6; pis. 4 and 5. 



- Mantell, G., The Geology of the S. E. of England. London. 1833. 

 P. 245. Figs. 1 — 3. Schenk, A., Zur Flora der nord westdeutschen Weal- 

 denformation. Palaeontographica. Bd 19. 1871. P. 207. PI. 1, figs. 10—13. 



