Distribution and habitat: Mexico Conservation status: 1997 IUCN Red List of Threatened Plants category R. Description:
Plants arborescent. Stem 1 m tall. Leaves light or bright green, semiglossy, 100-200 cm long, flat (not keeled) in section (opposing leaflets inserted at 180° on rachis), with 140-180 leaflets; basal leaflets reducing to spines. Leaflets narrowly lanceolate, falcate, inserted at 90° to rachis, not overlapping; margins flat, entire or dentate; median leaflets 10-18 cm long, 7-12 mm wide. Pollen cones narrowly ovoid to fusiform, pale brown, 25-50 cm long, 6-10 cm diam. Seed cones ovoid, pale brown, 20-30 cm long, 15-20 cm diam. Seeds ovoid, 25-35 mm long, 20-25 mm wide, sarcotesta cream or white.
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