LEAFLETS OF PHILIPPINE BOTANY 



EDITED BY A. D. E. ELMER. A. M. 



Vol. V. Manila, P. I., June 28, 1913. Art. 90 



SOME FERNS OF NORTH-EASTERN MINDANAO 



by 



E. B. Copeland 



{Dean, College of Agrknllure, Philippines University, 

 Los Bafios, P. I.) 



The collection made in 1912 by Mr. Elmer, in the moun- 

 tains east of the mouth of the Agusjin river, contains a 

 large number of ferns believed to be very rare, since they are 

 collected for the second or third time only. The number 

 of new species is strikingly small, compared with Mr. Elmer'' s 

 previous collections or with others made in territory equally 

 new to botanists. This marked falling off in the number 

 of new species indicates that the bonanza period in Philip- 

 pine pteridology is past, a fact attested by the study of 

 other recent collections as well. I recently climbed a virgin 

 peak almost three thousand meters high in northern Luzon, 

 without finding a single new fern. 



Only such ferns as are new or suggest comment of 

 probable interest find mention in the following. 



Angiopteris Elmeriana n. sp. 



Trunco 60 cm. crasso et alto; stipite teste Eimer 2 m. 

 alto, 5 — 8 cm. crasso, deorsum paleis latericiis vestito; fronde 

 usque ad 3 m. alta, ponderosa; pinnis usque ad 80 cm. vei 

 ultra longis; pinnulis ca. 15 cm. longis, 15—17 mm. latis, 

 sessilibus vel brevipedicellatis, basi plus minus inaequilateraliter 

 truncatis, apice seasim in caudam inconspicue sed acute ser- 



