Leaves 60-90 cm long, flat in section (opposing pinnae inserted at about 180° on rachis), with 110-160 pinnae; median pinnae at 50-90° to rachis, 10-19 cm long, 4.5-7.5 mm wide. Pollen cones 15-22 cm long, 8-11 cm diam. Megasporophylls 16-22 cm long, with 2-4 ovules; sterile apex 40-60 mm long, 22-32 mm wide.