210 29. LINDSAYA. § 2. EULINDSAYA. 



(25) li. rigida, ^. Sm. 



Forma typica: Leaflets shallowly lobed, the lobes entire, rounded or 

 rotundate-truncate, retuse or rotundate-emarginate or -crenate; veins and 

 edges thick-cartilagineous, very prominent; sori on 1 — 2 terminal lobes, 

 oblong or linear-oblong. 



Forma acutata: Like the type but the lobes or crenations subacute. 



Also in Sumatra. 



(25a) Ij. ILingii, Copel., in Philipp. .Journ., VF, 83. 



Rhizome creeping, moderately thick. Stipes approximate, 25 — 30 

 cm. long, brown, naked like the whole plant but the lower part scaly 

 and at length asperous. Fronds + 45 — 70 cm. long, ± 25 — 30 cm. 

 broad, branched, the rachis square, grooved. Branches + 10 — 15 on a 

 side, lower reduced, central to 18 cm. long, 1% cm. broad, subsessile, 

 acuminate. Leaflets 30 — 40 on a side, short-stalked, dimidiate, + 8 mm. 

 long, 3 — 4 mm. broad, inciso-crenate on the upper side. Sori solitary on 

 the lobes, intramarginal, mostly uniting the apices of 2 veins orveinlets; 

 indusium short an broad, pale-brown. 



Neio Ghiinea. 



(25&) It. iiiouosora, Copel., in Leafl., II, 398. 



Stipes up to 20 cm. or more long, sparsely scaly at the base. Fronds 

 up to 50 cm. long, 2-pinnate, with 8—5 pairs of subopposite or alternate, 

 rather strict, acuminate lateral branches overtopped by the terminal one 

 Leaflets + 7 mm. long, + 4 mm. broad, entire below, lobate-crenate on 

 the upper side, the lobules rounded or rotundate-truncate to retuse. 

 Texture herbaceo-papyraceous ; veins not proKiinent, free except that 2 

 or more coalesce in the base of the sori. Sori solitary at the outer 

 point or on the upper side near the outer point of the leaflets ; indusium 

 thin. — Differs from L. rigida J. Sm. by its fine, hardly prominent veins. 



Negros. 



(25c) 1j. diploisora, ». A. ». K., in Bull. Btz., 1914, XVI, 21. 



Rhizome wiry, wide-creeping, sparingly deciduously scaly, the scales 

 sessile, brown, lanceolate-subulate, entire, subadpressed, making the rhizome 

 rough by their persistent bases. Stipes scattered, + 7% — 15 cm. long, 

 glossy and naked like the rachis, deciduously scaly and asperous at the 

 base. Fronds + 22 '/j — 25 cm. long or longer, 2-pinnate, with a linear, 



