﻿814 APPENDIX. 22. DRYOPTERis. 



(25) I>. patens, O. Ktxe. — • Insert as a synomyn; Pohjpodium pa- 

 tens, Sw., (oldest name). 



(26) O. exigua, O. Kt«e. — Insert as a synonym ; Lastraea exigua, 

 J. Sm., (oldest name). 



(27a) O. Foxii, Christ, Philipp. Journ., II, 208: Nephrodium Foxii, 

 Copel., MS. 



Rhizome short, creeping or ascending. Stipes close, 5 — 10 c.M. long, 

 stramineous, naked. Fronds lanceolate, 20 — 30 c.M. long, 6—9 c.M. broad, 

 narrowed at both ends. Pinnae lanceolate, acuminate, ascending, the lowest 

 remote, minute. Lower pinnulae + 8 m.M. long, 1 — 1% m.M. broad, acute, 

 obscurely toothed, adnate, the others confluent, the higher tapering gradually 

 into a subserrate tail. Texture membranaceous; upper surface naked, lower 

 sparingly pubescent, the hairs whitish, short; veins + 5 on each side. Sori 

 medial; indusium naked, subpersistent. — Fronds sometimes reaching a size 

 4 X as large as indicated above. 



Luzon, Mindanao. 



* (54) O. Olix. luaii, Schott. — Insert as a synonym: Polypodium 

 Filix mas, L., (oldest name). — Insert as a variety: — var. marginata; iVe- 

 phrodium Filix-Mas, Rich., var. marginata, Clarke, Trans. Linn. Soc, Bot., 2"'* 

 Series, I, 521, tab. LXXI; Aspidium marginatum. Wall,, List, No. 591 (not 

 366); F Lastraea Filix-Mas, Pr., var. elongata, Bedd., Handb. Ind. Ferns, 250; 

 F L. elongata, Pr., Bedd., Ferns S.I. tab. CXII; F Nephrodium elongatum, 

 Ilk. ^ Grev., Ic. Fil., tab. CCXXXIV; D. marginata, Christ, Philipp. Journ., 

 II, 212. 



Var. marginala : Fronds large, oblong or ovate-lanceolate, not nar- 

 rowed at the base ; lowest pinnae falcate, often 2 — 3-pinnate ; main and par- 

 tial rachises nearly naked; tertiary segments oblong, obtuse, serrate or pin- 

 natifid sometimes nearly to the costa. — Luzon; Centr. China, North. India. 



%ai*. parallelog'raiMiua : — Also found in Luzon. 



(34a) I*, lieleopteroidcs, Christ, Philipp. Journ., II, 212. 



Rhizome short, thick. Stipes fasciculate, + 6 — 17 c.M. long, those of 

 the barren fronds the shortest, brown at the base, rufo-stramineous, clothed 

 with diaphanous, subulate, pale-brown scales, those of the fertile fronds the 

 longest, librillose. Fronds dimorphous, the barren ones deltoid, + 16 c.M. 



