PHILIPPINB SPECIES OF DKYOPTERIS. 213 



plaiit is small (ahvays ?), with deltoid fronds, the sterile oiics irregularly lobed. 

 It has the appearance of tlie fornia Heleojjteris of D. filix mas. The presence of 

 this member of the filix mas gioup augments thc continental and tcmperate 

 element in the mountains of northern Luzon, already known to be of considerable 

 magnitude. 



63. Dryopteris Balabacensis n. sp. 



Ampla, stipite pennae anserinae crassitie, 55 cni. longo, angiilosa, 

 nuda uti tota planta, cum rhachibus rufocastanea sive rufostraminea, 

 fronde tripinnata deltoidea 50 cm. longa et aequaliter aut latiore, basi 

 tripartita, pinnis 8 ad 10 infra apicem pinnatifidem valde remotis 

 (primo interstitio 14 cni. longo) petiohitis, petiolo infimarum pinnarum 

 5 cm. longo, pinnis infimi' 30 cm. et ultra longis basi 25 cm. latis, 

 deltoideis, postice acutis, pinnuhi infima posteriore 13.5 cm. longa 

 et 7 cm, lata, pinnulis iii incisolobatis, ovato-oblongis 2 cm. latis 4 ad 5 

 cm. longis obtuse lobatis, pinnis sui^erioribus sessilibus oblongis acumi- 

 natis, ad basin usque ad costam incisis versus apicem lobatis, lobis 

 extremis postice decurrentibus, oblongis acutiusculis, 8 mm. latis sinubus 

 acutis dentatis, dentibus decumbentibus, nervis in lobis pinnatis et bi- 

 aut trifurcatis, manifestis. Textura coriacea, colore ochreo-viridi, niti- 

 dulo, costis rufostramineis faciebus glabris, soris minutis numerosis 

 submarginalibus mediisve, indusio nigi*o coriaceo-carnoso renifornii mox 

 convoluto persistente praeditis. 



Balabac (392 Mangubat) March to April, 1906. Palawan (098, 712, Fox- 

 tvorthy) March to April, 1906. Sibuyan (25 McChegor) July, 1904. 



This species belongs to the D. sparsa group but is hirger than that species, 

 its pinnfe long stipitate, the base of the frond strongly tripartite, the basal pinna> 

 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. Pl. 2 (1891) 813. Nephro- 

 diimi sparsum Don. Prodr. Fl. Nepal. (1825) 6. 



LuzoN, Province of Benguet, Baguio (282 Topping) .Tanuary, 1903. Palawan 

 (672 Foxworthy) March to April, 1906. Mindanao, Province of Zamboanga, San 

 Ramon (1727 Copeland) April, 1905. 



Widely distributed in tropical Asia. 



65. Dryopteris purpurascens (Blume) Ncphrodium purpurascens Bliune 

 Enum. 169; Mett. in Ann. Lugd. Bat. 1: 227; Raciborski Ptor. Buitenz. 174, non 

 Hook. Sp. Fil. 4. t. 262. 



Differt a D. sparso squamis hasalibus subulato-angustatis, frondc qua- 

 dripinnatifida, pinnis infimis decompositis, magnitudine quadrupla. Icoii. 

 Hook. cit. est D. sparsa. 



MixDORO, Mount Halcon (6101 Mcrrill) November, 1906. 

 The species is also known from Java. 



