NovemBer 15, 1910] THE Ferns or Mount Apo 833 
Mindanao, Luzon. 
Malaya. to India and Polynesia. 
Antrophyum latifolium Bl. 
On wet walls of Baruring gorge, alt. 1100 m., No. 10729. 
*'Serara." The fronds are up to 23 cm. wide. 
Previously collected here and at San Ramon. 
Malaya to India and China. 
Antrophyum immersum (Bory) Mett. 
On trunks, in deep ravine, Baracatan creek, alt. 450 
m., No. 11090. ‘‘Parig-parig.” 
Mindanao, sometimes at sea level; Palauan. 
Malaya, Mascarenes. 
VITTARIA J. Smith. 
Vittaria alternans Copel. 
In soft, dense clumps on mossy trees, above Todaya, 
alt. 900 m., No. 10663. ''Pamantigan." The fronds are 
larger than the typical, and No. 10760 is perhaps a dis- 
tinct species. 
Lake Lanao and San Ramon, both in Mindanao. 
Vittaria lineata Swtz. sensu lat. 
In mossy forest, Mt. Apo, alt. 1800 m., Copeland 1517. 
Throughout the Philippines. 
Pantropic. 
Vittaria Merrilli Christ in P. J. 8. 2, C (1907) 174. 
Common in damp woods, alt. 1050 m., No. 10723. 
"Kalele." The frond reach a length of 150 cm. and the 
longer ones are usually twisted. | 
This is the type locality of the species, whose known 
range extends to Mindoro and Luzon. 
