Caudex short, erect; stipe to 40 cm long, dull castaneous, minutely hairy throughout; basal scales 15-20 mm long, abundant, firm and ± twisted, distal scales and those on rachis and lower surface of costae all much shorter and very narrow; lamina to 34 cm long; apical section trilobed, 27 cm long, base short-decurrent, midlobe 11 cm wide, entire, short-acuminate, narrowed at base to 8 cm, lateral lobes upcurved, 15 cm long from bases of their costae, 5.5 cm wide; pinnae 15 cm long with stalks 3 mm long and abrupt acute apices, each with one short abruptly acute basiscopic lobe; main veins in pinnae upcurved, 10-15 mm apart along costae, cross-veins irregular, small veins forming many areoles between them with fewer free veinlets than in T. angulata; lower surface of costae and veins copiously hairy, slender hairs between veins; upper surface of pinna-midrib densely covered with thick hairs 0.3 mm long, fewer similar hairs on main and smaller veins, a few thick hairs 0.5 mm long between veins; sori small, scattered irregularly, ex-indusiate, mostly not on free veinlets.
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