PHILIPPINE SPECIES OF DRY OPTERIS. 
199 
Var. degener n. var. 
Rhizomate elongato subrepente, pinnis ovatis saepe obovatis basi 
attenuatis, obtusissimis, obtuse crenato-lobatis, apice frondis elongato 
lato obtuse lobato, pinnis sterilibu§ brevius ( 6 cm. ) f ertilibus saepe longius 
(usque ad 25 cm.) stipitatis, pinnis f ertilibus remotis, soris irregulariter 
sparsis plus minus rotundis. Tota planta a 20 cm. usque ad 42 cm. 
alta, textura crassiuseula, colore obscure fere atroviridi, pubescentia 
imprimis rhacheos densa, strigosa, brunnea. 
Luzon, Province of Rizal, Angilog (Loher) February, 1906, the larger form; 
Montalban (Lolier) March, 1906, the smaller form. 
This is an accentuated variation of the normal form, the length of the merely 
lobed apex and the pinnae, scarcely coarsely crenate, giving the plant a singular 
aspect. 
Var. subsimplicifolia n. var. 
Smaller, distinguished from the preceding by its one distinct terminal elongated 
pinna, nearly entire, and in the lateral pinnae being very slightly developed and 
auricle-like. 
Luzon, Province of Tayabas (Infanta) (784 Whitford) September, 1904. 
19. Dryopteris diversiloba (Presl) n. subsp. Nephrodium diversilobum Presl 
Epim. (1849) 47; Mett. Aspid. TOO. Goniopt'eris asymmetrica Fee Gen. 253. 
Rhizomate debili, elongato, plus minus repente, stipitibus plus minus 
fasciculatis fere caespitosis aut subsolitariis, debilibus flexousis 8 cm. 
longis, fronde oblonga 10 cm. longa, 7 cm. lata, pinnata, pinnis subpe- 
tiolatis rhombeis aut lata ovatis obtusis aut in apicem lanceolatum 
prolongatis 5 usque ad 7 utrinque 4 cm. longis, 2.5 cm. latis basi 
saepe attenuatis sive hastulatis aut subcordiformibus, crenatis, apice 
lobatis lobis valde irregularibus, brevibus et usque ad 2 aut 3 cm. longis, 
lanceolato-obtusis 2.5 mm. latis mixtis. Apice frondis saepe lato, valde 
elongato, lobato ; pinnis fertilibus vix contractis, saepe apice solummodo 
sorifero, soris minutis exindusiatis numerosis irregulariter sparsis rariter 
seriatis saepe elongatis. Tota planta griseo pubescente, textura herbacea, 
colore dilute viridi-griseo. 
Luzon, Province of Nueva Viscaya, Quiangan (162 Merrill ) June, 1902: 
Province of Rizal, Mabacal (Loher) March, 1906; northern Luzon (11611 War- 
burg) 1888. Negros, Gimagaan River (83 Copeland) 1904. Mindanao, Province 
of Zamboanga, San Ramon (1547, 1774, 1754 Copeland) November, 1904, April, 
May, 1905: Province of Misamis, Mount Malindang (4613, 4710 Mearns & 
Hutchinson) May, 1906: District of Davao (698 Copeland) March, 1904: 
Province of Surigao (252 Bolster) April, 1906. 
Apparently common and widely distributed in the Philippines; endemic. 
This is a form of the D. oanescens group, but so accentuated, and at the same 
time so widely distributed (it should be one of the most common ferns in the 
Archipelago') , that it should be recognized as a subspecies. A small plant, almost 
turf forming with elongated, weak and often running rhizomes, the fronds not, 
or but little dimorphous, the pinnae few, short, broad, nearly square and very 
irregularly lobed, the lobes sometimes short and obtuse, sometimes, greatly 
elongated. The specimens with the elongated pointed pinnae have the appearance 
