Closely related to T. melanorachis, differing in firmer texture of fronds which are proportionately longer with more deeply lobed pinnae; lamina of largest frond 60 cm long, basal pinnae 25 cm long bearing 1 pair of stalked and 1 pair of adnate pinnules, basal basiscopic pinnule 14 cm long, acroscopic 8-9 cm long; two pairs of suprabasal pinnae each bearing one pair of sessile or slightly adnate pinnules; all veins rather strongly prominent on the lower surface; lower surface of pinna-midrib and main veins sparsely minutely hairy; upper surface of pinna-midrib densely very short-hairy, between veins ± abundant very short more slender hairs; sori rather large with large thin indusia, variable in form, the receptacle variably elongate (to more than 2 mm long); indusia often asymmetric at the base, glabrous with minutely papillose margin.
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