ARKIV FÖR BOTANIK. 



BAND 14. X:o 19. 



New Ferns from Madagascar. 



By 



CARL CHRISTENSEN, 

 Copenhagen. 



With 2 Plates. 



Communicated January 20th 1916 hj^ A. G. Nathorst and C. A. M. Lindm.4X. 



From Prof. H. V. Rosendahl, Stockholm, I have received 

 for determination a lot of ferns collected in Madagascar during 

 the Swedish Madagascar-expedition 1912 — 13 by Mrs. Af- 

 ZELiTJS and Palm. The following species were found to be 

 undescribed and are here proposed as new; some others have 

 been described by Prof. Rosendahl (Arkiv för Botanik, 

 Bd. 14, N:o 18). 



Dryopteris Palniii C. Chr. sp. nov, 



Pl. 2, Fig. G. 



Lastrea D. oligocarpae (Willd.) O. Ktze, valde similis, 

 differt laciniis versus apicem repandulo-crenatis. — Rhizomate 

 parvo, erecto. Stipitibus paucis, fasciculatis, gracilibus, ad 

 15 cm. longis, fusco-stramineis, brevissime puberula, versus 

 basin squamis nonnullis brunneis patentibus, ovato-acuminatis, 

 3 mm. longis onustis. Lamina intense viridi, herbacea, lan- 

 ceolata, utrinque attenuata, ca. 30 cm. longa, medio 10 cm. 

 lata, bipinnatifida, versus apicem acuminatum pinnatifida, 

 supra ad costam venasque pilis paucis subulatis albidis sparse 



Arkiv för botanik. Baud 14. X:o 19. 1 



