Plants acaulescent; stem 10-20 cm diam.; 1-5 leaves in crown. Leaves 50-110 cm long, moderately keeled, with 104-172 pinnae, mid-to dark green, highly glossy; petiole 5-26 cm long, 7-20 mm wide at lowest pinna; rachis strongly spirally twisted. Basal pinnae not reducing to spines. Median pinnae simple, 15-55 cm long, 2-5 mm wide, strongly discolorous; margins incurved; apex entire, not spinescent. Pollen cones fusiform, 10-16 cm long, 3-4.5 cm diam.; microsporophyll lamina 17-22 mm long, 13-16 mm wide; apical spine 0-13 mm long. Seed cones ovoid, 11-15 cm long, 6-8 cm diam.; megasporophyll with an expanded, peltate apex 25-35 mm wide and 12-15 mm long; apical spine 0-4 mm long. Seeds ovoid, 19-26 mm long, 18-22 mm wide; sarcotesta red.
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