﻿450 54. ATHYRIUM. 



moderately approximate, petiolate, the lower distant, rhomboid-ovate, unequal- 

 sided, lobed, acute, the lower side cuneately cut away, the upper side auri- 

 culate; lowest pinnae + 3^2 c.M. long, + 2V2 c.M. broad at the base. Lobes 

 oblique, oblong, obtuse, + 7 on each side, denticulate, the lower shallowly 

 lobed again, the lowest deeply incised and sometimes free like the auricle. 

 Texture thin ; surfaces naked like the rachis ; colour dark-green ; veins pinnate 

 in the lobes. Sori scattered, numerous, 3 — 7 to a lobe, ovate or roundish; 

 indusium reniform. 

 Luzon ; Yunnan. 



(36) A. beiig'iietense, Chfist, Philipp, Journ., II, 161. 



Rhizome creeping or oblique, slender, blick. Stipes approximate, few, 

 slender, stramineous, 25 c.M. or more long, the base clothed with scattered, 

 lanceolate, brown scales. Fronds lanceolate, ± 30 c.M. long, + 9 c.M. broad, 

 2-pinnatifid, not narrowed at the base. Pinnae sessile, spreading, remote, + 

 25 below the pinnatifid apex, the lowest subdeflexed, + 5 c.M. long, ± 1 '/2 

 c.M. broad, lanceolate, acuminate, pinnatifid nearly to the costa. Lobes sub- 

 pectinate, + 18 on each side, linear-oblong, ± ^'/j m-M. broad, bluntish, 

 entire or subcrenate. Texture flaccid; rachis and costae stramineous, 

 puberulous ; surfaces naked ; colour black-green ; veins simple, oblique, + 

 6 — 8 on each side. Sori medial, 6 — 8 on each side, roundish, hardly 1 

 m.M. broad; indusium thin, hyaline, roundish-reuiform, indistinctly umbonate, 

 caducous. — By its nephrodioid sori a Dryopteris, but in all other respects 

 a true Athyrium. 



Luzon. 



(3c) A,. Copelancli, Christ, Philipp. Journ., II, 161. 



Rhizome branched, short-creeping, blackish. Stipes ± 9 c.M. long, plum- 

 beo-stramineous, furforaceo-squamulose like the rachis, the base sparingly 

 clothed with brown, lanceolate-subulate scales. Fronds oblong, + 14 c.M. 

 long, + 6 c.M. broad, long-acuminate, not narrowed at the base, the rachis 

 winged towards the apex. Pinnae sessile, + 15 on each side, falcate, the 

 higher ones adnate, decurrent, the lower remote, coarsely lobed, + 3 c.M. 

 long, + 1 c.M. broad. Lobes + 6 on each side, the lowest anterior largest, 

 triangular-ovate, + 4 m.M. long, 3 m.M. broad, subacute, subcrenate. Tex- 

 ture coriaceous; surfaces naked; colour black-green, paler beneath, main 

 veins pinnate in the lobes with 3 —4 veins on each side, all soriferous. 



