Blechnum L.
Coenosori in a continuous or almost continuous line on each side of the midrib covering the vascular commissures, having a membranous indusium opening inwards towards the costa. Veins of the sterile fronds free Blechnum
Fertile and sterile fronds similar; the fertile pinnae or frond-segments slightly narrower to one-third of the width of the sterile
Sterile frond-segments (pinnae) very shortly and distinctly stalked in the greater part of the frond or in the lower third
Pinnae articulated to the main rhachis. Rhizome erect with a crown of fronds. Spores minutely papillate. Sterile pinnae very glossy, 6–13 cm long, 8–12 mm broad; the fertile pinnae 4–9 cm long, 4–8 mm broad. Plants up to 110 cm high. Coast and Woronora Plateau. Edge of brackish swamps or lakes, usually in sandy soil Blechnum indicum
Pinnae not articulated to the main rhachis. Rhizome shortly creeping or long-creeping. Spores with an alate, either reticulate or tuberculate perispore. Pendulous plants up to 120 cm long