Austroblechnum Gasper & V.A.O.Dittrich

Dittrich, Vinícius Antonio De Oliveira, Salino, Alexandre, Monteiro, Reinaldo & Gasper, André Luís De, 2017, The family Blechnaceae (Polypodiopsida) in Brazil: key to the genera and taxonomic treatment of Austroblechnum, Cranfillia, Lomaridium, Neoblechnum and Telmatoblechnum for southern and southeastern Brazil, Phytotaxa 303 (1), pp. 1-33 : 3

1. Austroblechnum Gasper & V.A.O.Dittrich in Gasper et al. (2016a: 202)

Type: Austroblechnum penna-marina (Poir.) Gasper & V.A.O.Dittrich

Plants terrestrial or epipetric; rhizomes erect, ascending, short or long-creeping, stoloniferous or not, moderately stout, sometimes with a small, thin caudex, bearing concolorous scales with entire margins; fronds dimorphic; stipes grooved, atropurpureous to dark, glabrous, with basal scales few, rather similar to those of rhizomes; blades lanceolate-acuminate or narrowly elliptic, pinnatisect to pinnate, rarely entire, ovate, with pinnae tapering downwards to rounded auricles, glabrous or with sparse trichomes; rachises grooved, glabrous or covered by few scales; buds absent; aerophores absent; pinnae partially or totally adnate to rachises, margins entire or crenate to serrate; veins free, 1 × –2 × forked, rarely simple, with clavate ends readily visible adaxially, forming hydathodes; sori linear, indusia entire to erose or fimbriate; x = 33.