NovemBer 15, 1910] Tae Ferns or Mount Apo 815 
Mts. Apo and Banajao. 
Athyrium macrosorum Copel. spec. nova. 
Stipitibus teste Elmer ca. 3 confertis, 60-150 cm. altis, 
superne suleatis, pedes versus nigris, sursum viridibus; fronde 
stipiti aequilonga, subdeltoidea, tripinnatifida, rhachidibug 
brunneo-stramineis, in alis pubescentibus, a liter glabris; pinnis 
longi-stipitatis, usque ad 50 em. longis sed maximis plerumque 
ca. 40 cm. longis; pinnulis brevi-pedicellatis, usque ad 15 
cm. longis, 25 mm. latis, acuminatis, glabris, herbaceis, infra 
pàullo pallidioribus;  venulis simplicibus; soris subcurvis, 
linearibus, 2-3 mm. longis; indusio angusto. 
Mt. Apo, by Mararag creek, alt. 1500 m., No. 11569. 
**Pacoo.” 
In appearance this suggests A. silvaticum (Bl.) Milde, but 
the sori are very different. 
Athyrium costulisorum Copel. spec. nova. 
Stipitibus teste Elmer 8-5 confertis, ultra 1 m. altis, vi 
ridibus, iufra brunneo-maculatis, glabris, basibus nigris, mar- 
ginibus intumescentibus albis ornatis; fronde plus quam 1 m. 
alta, tripinnata; pinnis’ horizontalibus, oppositis, maximis 
plus quam 50 em. longis, sessilibus, acuminatis, rhachidibus 
mox glabrescentibus; pinuulis usque ad 11 cm. longis, sub- 
sessilibus, acuminatis, rhachidibus supra canaliculatis, infra 
pube rufa sordida crinita persistente vestitis; pinnulis" utro- 
que latere ca. 20, usque ad '13 mm. longis, 4 mm. latis, 
infimis vix adnatis, obtusis, serratis vel inciso-serratis, la- 
mina glabra, venis infra pubeseentibus, utroque latere 7-10, 
furcatis; soris brevibus, indusiis rudimentariis mox evanes- 
centibus. 
On ledges along Cati creek, Mt. Apo, alt. 1750 m., No. 
11515. The Bagobo name in Mr. Elmer’s notes means ''Tree- 
fern by the river." 
A species of the Brachysorus group. 
Athyrium Blumei (Bergm.) Copel. 
In creek-bank soil, Mt. Apo, alt. 1750 m., No. 11514. 
Caudex erect, 30 em. high, stout. 
