PHILIPPINE SPKOIES OF DRYOPTERTS. 213 
plant is ymall (always ?), with deltoid fronds, tlie sterile ones irregularly lobed. 
It has the appearance of the forma llcleopteris of D, filix mas. The presence of 
tliis member of tlie fiUx mas group anj;ments the continental and temperate 
element in the mountains of northern Luzon, already Ivuown to be of considerable 
nia^'^nitude. 
63. Dryopteris Balabacensis n. sp. 
Ampla^ stipite pennae an^erinae crassitie, 55 cm, longo, an^ilofia, 
nuda iiti tota planta^ cum rhacliibus rufocastanea sive rufostraminea, 
fronde tripinnata deltoidea 50 cm. longa et aoqualiter aut latiorc, basi 
tripartita, pinnis 8 ad 10 infra apicem pinnatiMom valde remotis 
(primo intcrtititio l-i cm. longo) petiolatis, petiolo infimarum pinnarum 
5 cm. longo, pinnis infmil.^ 30 cm. et ultra longis basi 25 cm. latis, 
deltoideis, postice acutip, pinnula infinia postcriore 13.5 cm. longa 
et 7 em. lata, pinnulis iii incisolobatis, ovato-oblongis 2 cm. latis 4 ad 5 
cm. longis obtuse lobatis, pinnis supcrioribus sessilibus oblongis acumi- 
i 
natis, ad basin usque ad costam incisis versus apicom lobatis, lobis 
extremis postice decurrentibus, oblongis acutiusculis, 8 mm. latis sinubus 
acutis dentatis, dentibus decunibontibus, nervis in lobis pinnatis et bi- 
aut trifurcatis, nianifestis. Textura coriacea, colore ochroo-viridi, niti- 
dulo, costis rufostramineis faciebus glabris, soris minutis numerosis 
subniarginalibus mediisve, indusio nigro eoriaceo-carnoso rcniforini niox 
convoluto persistente pracditis. 
* 
Balabac (392 Man<julaf) March to April, 1900. Palawan (fiOS, 712, Fox- 
iDorthy) Marcli to April, 1900. Sibuyajj (25 McGregor) July, 1904. 
This species belongs to the D. sparsa group but is larger than that species, 
its pinnae long stipitate, the base of the frond strongly tripartite, the basal pinnae 
usually large and compound like the rest of the frond, stipe glabrous, indusium 
fleshy, convolute, black. It has the appearance of Sagenia, but the nerves are not 
united. 
■ * 
64. Dryopteris sparsa (Don) O. Ktze. Rev. Gen. PI. 2 (1891)' 813. Nepkro- 
dium sparsum Don. Prodr. Fl. Nepal. (1825) G. 
Luzon, Province of Benguet, Baguio (282 Topping) January, 1903. Palawan 
(672 Foxicorthy) March to April, IdOQ. Mixdaxao, Province of Zamboanga, San 
Ramon (1727 Copeland) April, 1905. 
Widely distributed in tropical Asia. 
r 
65. Dryopteris purpurascens (Blume) Nephrodium purpurascetts Bluiue 
Knuni. 169; Mett. in Ann. Lugd. Bat. 1: 227; Raciborski Pter. Buitenz. 174, non 
Hook. Sp. Fil. 4. t. 262. 
Differt a D. sparsa squamis l>as!ilihus subulato-angustatis, fronde qua- 
dripinnatifida, pinnis infimis deconipositis, magnitudine quadrupla. Icon. 
Hook. cit. est D. sparsa. 
MiNDtiBO, Mount Halcon (6101 Merrill) November, 1906. 
The species is also known from Java. 
I 
