242 25. ASPiDiUM. § 2. sagenIa. 



connected with copious areolae with included fi'ee veinlels. Sori numerous, 

 densely crowded, often confluent; indusium small, persistent. 

 Malaya; Burmah, North. India. 



(13) A. pteropodiiiii, met*, in Engl. & Prantl, Nat. Pfl.Fam., 

 I*, 183; Nephrodiinn pteropodum, Blc, Jomii. of Bot., XXVI, 325; Sagenia 

 pteropoda, Christ, Ann. Btz., XX, 108; ( ? Polypodium Scortechinii, Bk., C. 

 Chr., Ind. Fil.). 



Rhizome wide-creeping. Stipes with a narrow wing beginning ± 5 

 c.M. from the base, ± '/j— '/< c.M. broad, 30—45 c.M. above it. Fronds 

 oblong-lanceolate, acuminate, entii-e, + 30 c.M. long, 7 — 10 c.M. broad, nar- 

 rowed at the base gradually. Main veins distinct nearly to the edge; .areolae 

 with copious free veinlets. Sori minute, scattered irregularly, sometimes 

 confluent ; indusium minute, obscure. 



Borneo. 



* (14) 4. teriiatuui, nieU, in Engl. & Prantl, Nat, Pfl.Fam. I*, 



184; JSephrodium ternatum, Bk., Hk. Bk., Syn. Fil., 296. 



^ Rhizome wide-creeping, scaly. Stipes 15 — 25 c.M. long, slender, strami- 



-g neous. Fronds sometimes simple, 20 — 30 c.M. long, 5 — 10 c.3I. broad, oblong, 



S entire, narrowed gradually to the apex and base, but more usually trifoliate. 



03 



& the lateral pinnae like the terminal one but smaller. Texture papyraceo- 



ft 



^ herbaceous; main veins distinct nearly to the edge; areolae copious, but 



g rather large, with few free veinlets. Sori distant, in 2 distinct rows and 



others scattered between; indusium distinct. 

 Borneo. 



* (15) A. snbeaiidatuni, «. A. e. R. 



Rhizome erect or suberect, the scales linear-lanceolate, + acuminate, 

 dark-brown. Stipes + tufted, erect, naked, or scaly at the base, 6 — 12 cM^ 

 long, the upper Vs— Vs narrowly winged by the decurrent base of the frond 

 except in the truly trifoliate forms. Fronds simple, deeply 3-fid or 3-foliate, 

 with the central leaflet similar to the simple fronds, lanceolate, 15 — 25 c.M. 

 long, 4 — 5 c.M. broad below the middle, the base cuneate, + gradually nar- 

 rowed, the margin entire or repand, the apex long-acuminate, subcau- 

 date; lateral leaflets similar but smaller and narrower, erecto-patent, 

 slightly upcui-ved, free or joined at the base with the terminal one. Texture 

 papyraceous; surfaces naked; costae and main veins prominent; main veins 



