574 71. POLYPODIUM. § 1. EnPOLTPODinM. a. integrifolus. 



y.y. Ve^ns pinnate or 2"^ forked. 



+. Stipes very short. (55) P. knutsfordianum. 

 +.+. Stipes distinct, to 8 c.M. long or longer. 



(56) P. iDtromissuni 

 a.a. Fully developed fronds more than i2^l^ c.M. long. 



P . Stipes scabrous; fronds nearly naked. (57a) P. scabristipes. 

 p.p. Stipes hairy; fronds naked. (376) P. dolichosorum. 



P.p.'P. Stipes hairy; fronds hairy, at least on the costa. 

 » y'. Sori in i regular row on each side of the costa. 



S'. Margin ciliate. (38) P. setosum. 



<^.^'. Margin not ciliate. (39) P. puLinerve. 



y'.y'. Sori in i — 2 irregular rows on each side of the 

 costa (*). (40) P. diplosorum. 



:^.S',2'. Fully developed fronds more than 40 m.M. broad. 

 p. Sori in i row' on each side of the costa. 

 q. Veins simple or once forked. 



f . Fronds entire or slightly repand. 

 s. Fronds + sessile or subsessile. 



(41) P. padangense. 



#•*, Fronds distinctly • stalked. (42) P. obscurum. 



f.r. Fronds sinuate. (43) P. Warburgii. 



q.q. Veins pinnate or 2 — 3 X forked. (44) P. setigerum. 



p.p. Sori in 2 — 3 rows on each side of the costa. 



(45) P. sumatranum. 



(1) P. Oabelliveniam, BU., Hk. Bk., Syn. Fil., 322; Christ, 

 Farnkr. d. Erde, fig. 207; Ces , Fel. di Bor., tab. Ill, fig 7— 7a. 



Rhizome wiry, slender, creeping, the scales thin, brown, lanceolate. Stipes 

 2'/j — 5 c.M. long, filiform, naked, black, glossy. Fronds roundish or broadly 

 oblong, '/a — 1 V2 '^•^^- ^^^S ^^^ nearly as broad, the point subacute, the edge 

 thick, cartilagineous, deeply and sharply toothed, or with shallow, rounded 

 lobes or sometimes subentire, the base slightly cordate, broadly rounded or ± 

 cuneate. Texture coriaceous; surfaces nailed; veins subilabellate, once or more 

 times forked, the ultimate forks sometimes uniting before they reach the bor- 

 der. Sori 1 — 6 to a frond, all in the upper half, not far from the margin. 



Borneo. 



(*) See also P. setosum, Pr, 



