NovgMBER 15, 1910] Tue FERNS OF Mount Apo 807 
The fern is very common at the foot of the mountain. 
Common throughout the Philippines. 
Malaya, China. 
Hypolepis tenerifrons Christ in P. J. S. 3, C (1908) 274. 
Clumps on sandy soil, Mt. Apo, alt. 1800 m., No. 11486. 
""Natong." ‘‘Rootstock a few inches long, one or two inches 
thick.’’ Collected here previously by Copeland 1462, and 
Williams 2491. I do not regard this plant as Hypolepis, but 
rather as Dryopteris, but am not ready to transfer it. 
Mt. Halcon. 
Dryopteris sagenoides (Mett.) O. K, 
On canyon wall, Todaya, alt. 850 m., Copeland 1238, 
""Libagod." 
Mindanao, Leyte. . 
Malaya, Birma. 
Dryopteris purpurascens (Bl) Christ in P. J. S. 2, C 
(1907) 213. 
Terrestrial on a mossy ridge, Mt. Burebid, alt. 1500 m., 
No. 11842. ''Notong."  'Rootstock suberect, several inches 
long, one inch thick." 
Mt. Halcon. 
Malaya. 
Dryopteris subarborea (Bak.) C. Chr. by Christ in 
PJ: B5 $5 0 (097 214. 
On bowlders, ledges and mossy trunks, Mt. Apo, alt. 
1700 m., Nos. 11418 and 11550. ‘‘Libagod” and ‘’Tarugi.’’ 
‘Mindanao, Benguet (teste Christ.) 
Malaya. 
Dryopteris gymnocarpa Copel. spec. nova. 
Rhizomate breve, repente, ca. 1.5 mm. craso; stipitibus 
confertis, ca. 2 cm. altis, deorsum paleaceis, ubique rhachique 
pilis albidis ca. 0.7 mm. longis dense setosis; fronde usque 
