ARKIV FÖK. BOTANIK 



BAND 14. N:o 23. 



On two Collections of Ferns made in Madagascar 



by Dr. W. A. Kaudern 1911-12, Drs K. Afzelius 



and B. T. Palm (tlie Swedish Madagascar 



Expedition) 1912 18. 



By 



H. V. . ROSENDAHL. 



Stockholm. 



With 1 Map. 

 Oommunicated October Uth 191G, by G-. Lagekheim and C. Lindman. 



The ferns of Madagascar have been dealt with twice by 

 J. G. Bakee (1876, 1877) and later by J. Palacky (1906), 

 who published a list of the ferns occurring in this island. 

 The new species collected during the Swedish expedition 

 (1912 — 13) have already been described in this journal by C. 

 Cristensen (Arkiv för Botanik, Bd 14, N:r 19) and by the 

 autor (1. c. Bd 14, N:r 18). In this paper will be given a 

 summary of all the ferns collected in Madagascar by the 

 three Swedish naturalists. 



As to the four territories (see the annexed map by 

 Kaudern), situated in different parts of the islands, which 

 have been the object of particular research, Dr. Afzelius 

 lias kindly given the following information. 



The Tamatave territory on the north east side of the 

 island extends about 200 km along the coast between Tama- 

 tave and Sahabevava. This law coast strip, which is 

 about 10 km broad, is transformed suddenly toward the 



Arkiv för botanik-. Band 14. X o 23. 1 



