Plants acaulescent; stem 8-15 cm diam.; 1-5 leaves in crown. Leaves 50-90 cm long, strongly to moderately keeled, with 80-120 pinnae, dark green, semi-glossy; petiole 9-24 cm long, 4-7 mm wide at lowest pinna; rachis strongly spirally twisted. Basal pinnae not reducing to spines. Median pinnae simple, 14-21 cm long, 4-6 mm wide, strongly discolorous; margins flat or slightly incurved; apex entire, not spinescent. Pollen cones fusiform, 14-22 cm long, 4-4.5 cm diam.; microsporophyll lamina 16-20 mm long, 14-17 mm wide; apical spine 0-13 mm long. Seed cones ovoid, 13-15 cm long, 7-8 cm diam.; megasporophyll with an expanded, peltate apex 40-45 mm wide and 10-15 mm long; apical spine 2-30 mm long. Seeds ovoid, 21-26 mm long, 18-24 mm wide; sarcotesta red.
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