Compilation
Asplenium gracile

Epiphyte, lithophyte or terrestrial; rhizome erect, to 5 mm diameter, with brown lanceolate to narrowly ovate dark brown clathrate rhizome scales to 3 (?–5) mm long with pale entire margin. Frond tufted, erect to arching, herbaceous, proliferous below the apex. Stipe greyish-brown, 4–17 cm long, with narrow green wings when fresh, usually less than half the length of the lamina, with occasional clathrate scales similar to those of the rhizome becoming more frequent towards the base. Lamina very narrowly oblong to narrowly oblong-elliptic in outline, 10–39x2.5–6 cm, 2-pinnatisect to 3-pinnatifid on basal acroscopic lobes, lowest pinnae hardly reduced, apical segment deeply pinnatifid with 3–5 lobes. Pinnae 13–32 pairs, petiolate, rhombic-oblong or narrowly oblong in outline, up to 3.5x1.1 cm, variously acute-auriculate with the acroscopic basal lobe 2–4-fid, base dimidiate with basiscopic margin formed by midrib for 1/3 of pinna, most of the other segments very narrowly oblong-obtuse (some larger segments 2-fid) up to 6x1.5 mm, subglabrous with a few minute substellate scales on the veins. Rachis matt-greyish-green when dry, with occasional pale brown minute substellate scales. Sori one central per pinna lobe, broadly elliptic at maturity, 2–3 mm long; indusium elliptic, membranous, entire, to 1 mm wide. Fig. 7: 8, p. 42.