OcroBeR 90, 1908] PTERIDOPHYTES OF THE Horn oF NeGRos 889 
as reaching a greater height than they have been found to 
reach elsewhere. This peculiarity of the local ferns is obviously 
to be correlated with the extreme humidity. 
POLYPODIACE 5. 
ACROPHORUS Presl. 
Acrophorus stipellatus (Wall.) Moore. 
In damp woods, alt. 1300 m., No. 9870. 
Already collected on Apo, Haleon, and Data. 
India, Malaya. 
DRYOPTERIS Adan. 
Dryopteris dubia Copel. in Elmer’s Leaflets 1 (1907) 235. 
On moist, usually loose soil, in humid woods, alt. 1200 m., 
Nos. 9604, 9713, 10102. 
Previously known only from Elmer’s Mount Banajao col- 
lection. 
So far as the indusium is concerned this fern could as 
well be referred to Acrophorus as to Dryopteris. The field 
notes state that the rootstalk is erect, sometimes 30 cm. high, 
and occasionally branched. 
Dryopteris intermedia (Bl) O. K. 
On damp, almost sheer slopes, alt. 850 m., No. 10166. 
Luzon, Negros, Zamboanga. 
Southern Asia, Malaya. 
Dryopteris setigera (BI.) O. K. 
On steep slopes, usually in the sun, alt. 600 m., Nos. 0889 
(a giant form), 9893, 9942. Local name ‘‘Locdo.’? 
Throughout the Philippines. Common and variable. 
China and Malaya. 
Dryopteris sparsa (Ham.) 0. K. 
In rich soil in humid woods, alt. 1200 m., No. 10100. 
Throughout the Philippines, but usually not in especially 
moist woods; Elmer's plants are thinner in texture than the 
others in these islands. 
Southern Asia and Malaya. 
Dryopteris metteniana Hieron. by Christ in Philip. Journ. 
