Introduction. 



In 1913, Professor V. M. Goldschmidt of Kristiania discovered a plant-bearing 

 series of Devonian sediments at the little lake Röragen between the Norwegian mining 

 town of Röros and the Swedish frontier. Tlie large collection of fossil plants brought to- 

 gether on this occasion by Prof. Goldschmidt and his assistants is now kept in the 

 Palaeontological Museum of the University of Kristiania, with the exception of some fine 

 specimens presented to the Palaeobotanical Department of the Swedish State Museum 

 of Natural History. The Kristiania collection was briefly examined by Professor A. G. 

 Nathorst during the course of a short visit, and some of the more important specimens 

 in it were afterwards lent to the Stockholm museum for the purpose of a more detailed 

 study. A preliminary report on the flora by Prof. Nathorst appeared in the autumn 

 of 1913 as an appendix to Prof. Goldschmidt^ memoir on the geology of the Devonian 

 area of Röragen (see the Bibliography appended to this paper). In this report a number 

 of the most important specimens are figured and shortly characterized but are not de- 

 scribed in detail. 



On the suggestion of Prof. Nathorst the author of this paper undertook the con- 

 tinued exploration of the plant-bearing beds and during the summer of 1914 spent two 

 weeks collecting more material in the field. For this purpose I received grants from the 

 f unds of »Lars Hiertas Minne » at Stockholm and — through the kind agency of Professor 

 J. Kiaer — also from the University of Kristiania. For this support I desire here to 

 express my deep gratitude. My exploration of the field was much facilitated through 

 the good ad vice and the introductions to local residents received from Prof. Goldschmidt, 

 to whom I wish to convey my sincere thanks. During the course of my work in examin- 

 ing the material in the Palaebotanical Department of the Swedish State Museum of 

 Natural History I received, as always, much valuable help from Prof. Nathorst, to whom 

 I am therefore greatly indebted. During a short visit to Kristiania I had further an 

 opportunity to look through Prof. Goldschmidt^ extensive collections, which were 

 kindly placed at my disposal by Prof. Kiaer. The present paper is based chiefly on my 

 own collections of 1914, but reference will be made also to the specimens from Prof. 

 Goldschmddt's collection figured by Prof. Nathorst. 



