﻿242 25. ASPIDIUM. % 2. SAGENIA. 



connected with copious areolae with included free veinlets. Sori numerous, 

 densely crowded, often confluent; indusium small, pei'sistent. 

 Malaya ; Biirmah, North. India. 



(13) A. iftier^pofliim, IHelg, in Engl. & Pranll, Nat. Pfl.Fara., 

 P, 183; Nephrodiwn pteropodum, Bk, Journ. 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, ± '/a— ^/i c.M. broad, 30—45 c.M. above it. Fronds 

 oblong-lanceolate, acuminate, entire, + 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) A. tensatuiBB, J9«el#, in Engl.' & Prantl, Nat, Pfl.Fam. I*, 

 184; Nephrodium ternatiim, Bk., Hk. Bk., Syn. Fil., 296. 



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

 neous. Fronds sometimes simple, 20 — 25 c.M. long, 5 — 8 c.M. broad, oblong, 

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

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

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

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

 others scattered between; indusium distinct. 



Borneo. 



« (15) A. ^uhesiiMiatntM, v. A. «. H. 



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

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

 long, the upper V2— Vs narrowly winged by the decurrenl 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 similai- but smaller and narrower, erecto-patent, 

 slightly upcurved, free or joined at the base with the terminal one. Texture 

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



