Novemser 15, 1910] THe Ferns or Mount Apo 831 
Plagiogyria Christii Copel. 
In dense forest, Mt. Calelan, alt. 1450 m., No. 10910 
**Libagod.’? 
The original collection was from Apo. The species has 
also been found on Halcon. 
ADIANTUM Linn. 
Adiantum diaphanum BI. 
On sheer, sheltered banks over river, Todaya, alt. 900 
m., No. 10727. ‘‘Sigbut.” The simply pinnate form. 
Common in Mindanao and Luzon. 
Malaya to India, Polynesia and New Zealand. 
PTERIS Linn. 
Pteris longipes Don. 
In dense woods near Sibulan river, alt. 400 m., No. 
11195. "''Lacuduk." 
Common northward to central Luzon. 
Malaya and southern Asia. 
Pteris caesia Copel. : 
Todaya, alt. 850 m., Copeland 1515, 963. Unknown 
elsewhere. 
Pteris excelsa Gaud. 
Todaya, alt. 1200 m., Williams 2457. 
Mindanao, Negros, Palauan, central Luzon. 
Malaya to northern India and Hawaii. 
Pteris radicans Christ (?) 
In moist densely wooded flats, Mt. Calelan, alt. 1400 
m., No. 11863. ‘‘Salodot.’? Caudex very stout, suberect. 
The same fern has been collected on Apo by DeVore and 
Hoover No. 320, by myself, and by Williams No. 2456. The | 
