﻿22. DRYOPTERIS. § 1. LASTSAEA. 193 



var. cochleajla, Bedd., Haiidb. Ind. Ferns, 250; L. cochleafa, Moore, Bedd., 

 Perns S.I., tab. GXV; D. cochleata, C. Chr., Ind. Pil. 



Rhizome oblique, stout, densely clothed with pale-brown, broadly lan- 

 ceolate scales. Stipes tufted, + 15 — 20 c.M. long, scaly like the rachis, the 

 scales lanceolate. Fronds 30 — 100" c.M. or more long, 20 — 50 c.M. broad, 

 ovate-lanceolate. Pinnae lanceolate, acuminate, 2 — 4 c.M. broad, cut down 

 nearly or quite to the rachis into numerous, blunt, close, entire, crenate or 

 serrulate segments 5 — S m.M. broad; lower pinnae rather shorter than the 

 others and more distant. Texture herbaceous; surfaces naked; lower veins 

 subpinnate. Sori large, numerous, in 1 row on each side, nearer the costulae 

 than the margin; indusiiim reniform, + convex, naked, often persistent. 



\stv. parallelogramma: Segments of the pinnae slightly cre- 

 nate; rachis scaly, the scales linear, black-brown. 



\stv. cocbleata : Fronds dimorphous, barren ones subdeltoid, 2- 

 pinnatifid, fertile ones linear, pinnate, with the pinnae oblong, simple, toothed, 

 blunt. Sori very large, completely covering the under surface of the fertile fronds. 



Inhabiting almost all the temperate climates of the world except Australia ; ^ 

 var. parallelogramma : Celebes; South. India, Columbia, Mexico; — var. cochle- 

 ata: Malacca; Br. India. 



* (35) O. isyi'Uiatiea, O. Mtxe, C. Chr., Ind. Fil. ; Aspidium syrmaticum, 

 Willd., Rac, Flor. Btz., I, 171 ; Lastraea syrmatica, Moore, Bedd., Handb. Ind. 

 Ferns, 243; L. spectabilis, J. Sm., Bedd., Ferns S.I., tab. CVIII; Nephrodium 

 spectabile, Hk., Spec. Fil., IV, 115; N. syrmaticmn, Desv.,Ek.lik.,Sjn.Fi\.,'il'i. 



Rhizome erect, densely clothed with entire, lanceolate scales. Stipes 

 tufted, 30—60 c.M. long, scaly at the base. .Fronds 50 — 150 c.M. long, ovate- 

 oblong. Pinnae ± 10 — 30 c.M. long, 2 — 4 c.M. broad, linear-lanceolate, cut 

 ^4 — %-way down to a broadly winged rachis into ovate, bluntish, slightly 

 falcate, toothed lobes 4 — 8 m.M. broad, the sinuses rounded, with a small 

 tooth in the top. Lower pinnae not much smaller, short-stalked. Texture 

 subcoriaceous, slightly pellucid; surfaces naked; veins 7 — 15 on a side, nearly 

 all forked. Sori small, medial on the anterior veinlets, nearer the edge than 

 the costulae. 



Malaya; North. India. 



(36) D. erytbroisoi'a, O. Ktxe, C. Chr., Ind. Fil; Nephrodium 

 erythrosorum, Hk., Hk. Bk., Syn. Fil, 273; N. prolificum, Diels, in Engl, k 

 Prantl, Nat. Pfl.Fam., 1\ 173. 



FiLICES. 13 



