Elaphoglossum angustatum (Schrader) Hieron.

Rhizome widely creeping, branched, up to 8 mm diam., phyllopodia 3-
 long, black, aerophores small, rhizome densely set with pale brown, scariose, lanceolate scales with numerous filamentous outgrowths along the margin, up to 9 x 1.5 mm; stipe approximate, terete, firm, pale brown togreen, trophophyll stipe up to 310 mm long, sporophyll stipe usually longer than trophophyll stipe, up to 350 mm long, with few deciduous, scariose, amorphous scales with few filamentous outgrowths along their margins, up to 3.5 x 1.2 mm; trophophyll simple, entire, firmly herbaceous, linear tonarrow-elliptic, apex acute to obtuse, longly decurrent to base, up to 300 x 50 mm, venation free, midrib shallowly sulcate ventrally, ventral surface with few minute pale brown, substellate to filiform scales becoming more frequent near base and along midrib; sporophyll simple, entire, firmly herbaceous, narrow-elliptic, apex often obtuse, longly decurrent to base, up to 250 x 20 mm, venation free, midrib shallowly sulcate ventrally, ventral and dorsal surfaces with minute, pale brown, substellate to filiform scales along midrib; sori acrostichoid, annulus large, 12-13 (12)-celled; spore sporoderm with irregular, narrow, reticulate wings up to 4 µm high, crests finely fimbriate, wings and areas between are papillate, papillae often form small units, otherwise relatively smooth, 32-42 µm diam.