Stems to 2 (-5) m tall. Leaves 60-110 cm long, strongly keeled (opposing pinnae inserted at 30-90° on rachis), with 180-220 pinnae, blue, very strongly glaucous, dull. Petiole 18-27 cm long, spinescent for 30-100% of length. Median pinnae 8-18 cm long, 2-3 (-4) mm wide, narrowed to 2-3 mm at base (to 80-100% of maximum width), inserted at 20-60° to rachis, 5-6 mm apart, glabrous; margins revolute; midrib flat above, raised below. Cataphylls linear, soft, 3-5 cm long. Pollen cones ovoid, 16-20 cm long, 7-10 cm diam., orange. Microsporophyll lamina 35-50 mm long, 12-15 mm wide; apical spine 6-9 mm long. Megasporophylls 16-21 cm long, with 2-4 ovules; lamina lanceolate, 40-70 mm long, 15-25 mm wide, obscurely dentate or regularly dentate with 26-32 lateral spines 0-1 mm long and 1 mm wide; apical spine 15-20 mm long. Seeds 36-42 mm long, 30-37 mm wide.
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A small palm like plant. It has a trunk 2-5 m tall. The trunk is stout and swollen at the base. The leaves are divided into leaflets along the stalk. The leaves are 1-2 m long. The stalk is hairy and slightly bluish. The leaflets are narrow and the edges are curled under. Leaflets are V shaped and 6-15 cm long by 0.4 cm wide. The male cone is oval and golden brown. The female spikes are sword shaped and rusty brown. The fruit are shiny brown and about 2 cm long.
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