SPICILIGIUM FILICUM PIIILIPPINENSIUM. 
161 
26. Athyrium nanum n. sp. 
Rhizomate obliquo brevi aut subrepente, foliis subfasciculatis paucis 
(3 ad 4) stipite tenui fusco squamulis tenuissimis setulosis rufobrunneis 
patentibus cum rhachi pubescente fere 0.5 ad 1 cm. longo, fronde lan- 
ceolata 6 cm. longa, 7 mm. lata in longam apicem pinnatifidum prolon- 
gata, fere usque ad basin alata et utrinque 5 aut 6 pinnis remotiusculis 
praedita, pinnis segmentisque erecto-patentibus, 2.5 ad 5 mm. altis supe- 
rioribus basi aequalibus integris oblongis inferioribus inaequalibus antice 
auriculatis subcrenatis infimis inaequalibus crenato-lobatis, puberulis, ner- 
vis furcatis vix pinnatis, soris ca. 5 pro segmento, vix 1 mm. longis, 
ovatis, ochraceis, indusio lanceolato rarius aspidioideo reniformi. Colore 
laete virente, textura flaccide herbacea. 
Mindanao, Lake Lanao, Camp Keithley (656 Mrs. Clemens) July, 1906. 
The smallest species of the genus known, pinnatifid and in part only simply 
pinnate, distinguished by its rather strongly winged rachis. 
27. Athyrium drepanopteron (Kze.) Moore. Asplenium oxypliyllum (Wall.) 
Hook. Polypodium drepamopteron Kze. Linnaea 23: 278, 318. Lastrea eburnea 
J. Sm. Bot. Mag. 72 (1846) Comp. 34. 
Luzon, Province of Benguet, Baguio (6498 Elmer) June, 1904; found also by 
other American collectors. 
A continental type extending from Japan to Yunnan and north India. 
28. Athyrium Benguetense n. sp. 
Rhizomate ut videtur repente aut obliquo tenui nigro, stipitibus ap- 
proximatis paucis tenuibus stramineis 25 cm. et ultra longis, basi 
squamulis lanceolatis brunneis 2 mm. longis sparsis vestitis, rhachi et costa 
puberulis, planta aliter nuda, fronde caudato-aeuminata lanceolata 30 
cm. longa 9 cm. lata basi non attenuata bipinnatifida, pinnis patentibus 
sessilibus (costa straminea) remotis, infimis subdeflexis, ca. 25 infra 
apicem lobatum, 5 cm. longis 16 mm. latis lanceolato-acuminatis fere ad 
rhachin incisis, segmentis subpectinatis ca. 18 utrinque 2.5 mm. latis, 
lineari-oblongis obtusiusculis subcrenatis aut integris, nervis 6 ad 8 
utrinque simplicibus obliquis, soris mediis 6 ad 8 utrinque, rotundis 
vix 1 mm. latis ochraceis, indusio tenuissimo rotundo reniformi hyalino 
umbone obscure, mox evanido. Textura flaccida, colore atroviridi. 
Luzon, District of Lepanto, Mount Data (Loiter) February, 1894, 2,250 m. alt.; 
Province of Benguet, Pauai (1948 Copeland) November, 1905, alt. 2,150 m. 
By its aspidioid sori a Dryopteris, but in all other respects a true Athyrium, 
very delicate and with segments almost entire. 
29. Athyrium Copelandi n. sp. 
Rhizomate ramoso breviter repente crassiusculo atrato, stipitibus 
plumbeo-stramineis basi squamis lanceolato-subulati s brunneis parce ves- 
titis, supra cum rhachi furfuraceo-squamulosis, 9 cm. longis, fronde 14 
cm. longa, 6 cm. lata oblonga, basi non attenuata longe acuminata, pinnis 
