NovEMBER 15, 1910] THE Ferns or Mount Apo 835 
almost marginal in the very narrow fertile fronds. Dense 
tufts in humid woods, Mt. Calelan, No. 10803. The tufts 
completely encircle small trees. 
Known only from Elmer’s collection from the Horn of 
Negros, where it grows under similar conditions. 
Loxogramme conferta Copel. 
Catalonan (foot of Calelan), Copeland 942. 
Mindanao only. 
Loxogramme involuta (Don) Presl. 
On earth and rocks over Sibulan river, alt. 400 m., 
No. 11197. "''Baraway." 
Throughout the Philippines, mostly terrestrial. 
Malaya to China and Melanesia. 
Loxogramme lanceolata (Swtz.) Presl. 
On bowlders near Sibulan river, alt. 500 m., No. 11148. 
" Baraway."? 
Throughout the Philippines. 
Malaya to Africa, Japan and Polynesia. 
ACROSORUS Copel. 
Acrosorus exaltatus Copel. in P. J. 8. 1, Suppl. (1906) 159. 
In tree tops on a dry ridge, Mt. Calelan, alt. 1800 m. 
"Bagebet-hulan." 
Previously known only from Mt. Apo, at the same al- 
titude. 
PROSAPTIA Presl. 
Prosaptia ancestralis Copel. spec. nova. 
P. grandis soris submarginalibus oblique versus marginem 
apertis; frondibus 60 cm. longis, 5-6 cm. latis, ad alam an- - 
