﻿^1^ 29. LINDSAYA. § 2. EULINDSAYA. 



* (26) 1j. impressa, Chtnst, Ann. Btz., XX, 132. 



Rhizome creeping, brown, the scales subulate, brown. Stipes approxi- 

 mate, 5 — 20 c.M. long castaneous, firm, naked. Fronds 1 — 2 X pinnate, 

 20 — 40 c.M. long. Branches 3—5, sessile, erecto-patent, ± 13 c.M. long, 

 + 3 c.M. broad, acuminate. Leaflets approximate, spreading, dimorphous, 

 the barren ones + 15 m.M. long. ± 6 m.M. broad, sessile, ovate-oblong, 

 with the apex obtuse, nnrrowed, the upper and outer edge toothed or nearly 

 lobed, the lobules ± serrate, the fertile ones smaller, acute, triangular, entire. 

 Texture subcoriaceous, fragile; rachis and surfaces naked; veins blackish, 

 conspicuous, deeply impressed, forked, some of them sometimes anastomosing. 

 Sori narrow, linear, continuous, occupying the upper edge of the fertile leaflets. 



Borneo. 



* (27) li. natunae, BU., Kew Bull., i896, 40. 



Rhizome short-creeping. Stipes approximate, elongate, naked, pale-brown, 

 canaliculate. Fronds deltoid, + 50 c.M. long, 2-pinnate. Branches + 3 — 4- 

 jugate, 8 — 12'/2 c.M. long, 2 — 2^/^ c.M. broad, lanceolate, subsessile. Leaflets 

 multijugate, close, the central ones the largest, + 5 m.M. broad, sessile, the 

 lower edge straight, the upper one lobed. Texture membranaceous; rachis 

 naked, pale-brown; surfaces naked; veins simple, distant, conspicuous, the 

 lower ones forked. Sori oblong, terminal on the lobes. — A plant found in 

 Lingga by Mr. Teysmann and which may be a form of this species has the 

 leaflets nearly close, the veins forked, the sori continuous except when inter- 

 rupted by some shallow, broad, lobe-like creuations. Branches of the fronds 

 1— 2-jugate. 



Natuna Islands, ? Lingga Islands. 



* (28) Vi. long-isisima, Christy Ann. Btz., XX, 131. 



Stipes castaneous, slender, nearly glossy, naked, ± 40 c.M. long. Fronds 

 to 80 c.M. long or longer, 2-pinnate. Branches distant, alternate, sessile, 

 acuminate, arcuato-nutant, ± 5 — 6 below the terminal , one, + 60 c.M. long, 

 2 — 2 '/a c.M. broad, pectinato-pinnate. Leaflets very numerous, close, sessile, 

 rhomboidal, obtuse, + 3 m.M. broad, the base cuneate, the lower edge + 

 decurved, the upper and outer edges broadly lobed, the lobes shallow, obtuse, 

 crenate Texture herbaceous, opaque; surfaces naked; veins not conspicuous, 

 forked, some of them sometimes anastomosing. Sori few, submarginal, ter- 

 minal on the outer lobes, 2 — 3 to a pinnula; indusium greyish. 



Borneo. 



