Lomaria vulcanica Blume; Spicanta vulcanica (Blume) Kuntze; Lomaria deflexa Colenso; Lomaria deltoides Colenso; Lomaria paucijuga Colenso;Coastal to montane. Usually in forested areas on cliff faces, rock outcrops, banks (especially roadside banks) and, less commonly on boulders and rocks along stream beds and in open forest.Rhizome creeping to erect, sometimes forming a small trunk. Fronds dimorphic, 0.01-0.68 m long, 30-100 mm wide. Stipe 90-360 mm long, stramineous to brown; scales linear to narrowly triangular, acuminate, entire, dark red-brown, with straight white hairs at least at base of stipe. Lamina narrowly triangular, pinnatisect or pinnate, with 6-30 or more pairs of pinnae; rachis and costae stramineous to brown, - glabrous; sterile pinnae oblong to narrowly triangular, weakly falcate, acuminate, 32-80 - 8-10 mm, often pilosa, adnate; margins crenate; basalt pinnae broader, falcate, deflexed, not adnate basiscopically; fertile pinnae 30.0-45.0 - 2.0-3.5 mm.