Flora of New Zealand Series

T. erectum Brack. U.S. Expl. Exped. Bot. 16, 1854, 250, t. 36, f. 1.

T. tenue Brack. loc. cit., t. 36, f. 2.

T. naumannii Kuhn et Luerss. ex Christ in Engl. Bot. Jb. 23, 1896, 336.

T. alternans Carr. in Seem. Fl. vitiensis 1873, 343.

T. humile auct. non  Forst. f.

Rhizome slender, densely beset when young with red-brown hairs; stipites rather distant. Stipes filiform, 1-3 cm. long, narrowly winged for half length or more. Rhachis winged. Lamina 2-10 cm. long, dark green, irregularly 2-pinnatifid; pinnae close, narrow-oblong to lanceolate or oval; final segs up to 5 mm. long, linear, widening slightly to apex. Sori solitary, immersed in tip of short lateral seg., on upper side and near base of pinna. Indusium urceolate to tubular; mouth expanded, minutely 2-lipped. Receptacle filiform, exserted, up to 10 mm. long.

DIST.: K., N., S. Lowland forest as far south as lat. 44º. Also in Norfolk Is, Fiji, Samoa, Tahiti.

T. tenue and T. naumanii are narrow-fronded forms; T. erectum a reduced form.