Diplazium bostockii D.L.Jones

Rhizome not seen. Fronds arcuate. Stipe 40-60 cm long, black at the base, deeply 3-grooved. Lamina 4-pinnate, triangular, 60-80 cm long, 40-60 cm wide, firm, dark green. Pinnules oblong, 4-12 mm long, 3-5 mm wide, falcate; base broadly attached to the axis; margins nearly entire or lobed one-third of way to costule; lower margin not decurrent; apex caudate. Sori 1-1.5 mm long, 2-6 per pinnule, mostly single; indusium pale brown, not fragile.

Grows at about 700 m altitude, in rainforest, in a moist situation near a stream.