204 
CHRIST. 
29. Dryopteris pteroides (Retz.) 0. Ktze. Rev. Gen. PI. 2 (1891) 813. 
Polypodium pteroides Retz. Obs. 6 : 39. 
Mindanao (293 Cuming ) “Nephrodium Cumingii J. Sm.” in Hook. Journ. Bot. 
3 (1841) 411: Lake Lanao (254 Mrs. Clemens) February, 1906; Province of 
Zamboanga (1604 Copeland) 1905; District of Davao (636 Copeland) March, 
1904. Balabac (420 M angubat ) : Mindoko, Calapan (984 Merrill) April, 1903. 
Culion (487, 594 Merrill) December, 1902. Luzon, Province of Rizal, Montalban 
(Loher) March, 1906: Province of Pampanga, Mount Arayat (54 Bolster) March, 
1905. Palawan (271 Bermejos) December, 1905. 
Throughout the Malayan Tegion. 
30. Dryopteris extensa (Blume) O. Ktze. Rev. Gen. PI. 2 (1891) 812. 
Aspidium extensum Blume Enum. (1828) 156. 
Balabac (415 Mangubat) April, 1905. No. 391 Cuming, distributed in 
Cuming’s Philippine series, was from Malacca, fide J. Sm., Hook. Journ. Bot. 
3 (1841) 411, sub Nephrodium cumingii J. Sm. It is referable to Dryopteris 
extensa. 
Throughout the Malayan region. 
31. Dryopteris Bordenii n. sp. 
Rhizomate elongato obliquo crasso, radicoso, squamulis minutis lanceo- 
latis crispis dilute brunneis sparso, foliis paucis subfasciculatis, stipite 
firmo usque ad 30 cm. longo, saepe breviore, plumbeo- aut castaneo- 
stramineo, puberulo auriculis parvis triangularibus subacutis saepe ad 
meros lobulos minimos aut ad callos reductis, circ. 10 utrinque, iustructo, 
fronde ovata basi haud attenuata > sed pinnis inferioribus valde deflexis, 
25 usque ad 35 cm. longa, 15 ad 20 cm. lata, acuminata, pinnata, pinnis 
infra remotiusculis, supra confertis alternis, inferioribus ad basin valde 
attenuatis, acuminatis, lanceolatis, sessilibus, supremis, adnatis, ca. 15 
utrinque infra apicem pinnatifidum recte patentibus, 10 cm. longis 
16 mm. latis, basi truncatis, inferioribus attenuato-cuneatis, usque ad 
mediam laminae partem incisis, ala 0.5 cm. lata relicta, lobis obliquis 
subfalcatis pectinato-confertis, sinu fere nullo inter jecto, obtusis, inte- 
gris, ca. 25 utrinque, 3 mm. longis, 2.5 mm. latis, nervis parum con- 
spicuis, 7 utrinque, una area costali et secunda sinu applicata, rhachi 
faciebus costis costulisque breviter pubescentibus, soris mediis parvis 
atrobrunneis, sporangiis laevibus, indusio minuto obscure griseo reformi 
mox evanido. Colore obscure viridi, opaco, textura herbacea. 
Luzon, Province of Bataan, Lamao River, Mount Mariveles (1237 Borden) 
June, 1904; (6823 Elmer) November, 1904: Province of Rizal (66, 78 Fox- 
worthy) January, 1906: Province of Pampanga, Mount Arayat (493 Topping) 
February, 1904: Province of Tayabas, Mount Banajao {Loher) February, 1906. 
Palawan (571 Foxworthy) April, 1906. 
The frond has the configuration of that of P. sagittaefolia, the base of the 
frond being abrupt and the pinnae being replaced by reflexed and pointed auricles 
which occupy the stipe to the base. D. Bordenii however does not belong, like 
D. sagittaefolia, in the group with D. parasitica, not having hairy sporangia. 
The rhizome is oblique, elongated, the roots strong, the scales very small 
lanceolate and twisted. 
