Trees monoecious; branchlets arranged in a plane, flattened, lower side with white powder. Leaves decussate, scalelike, dimorphic along branchlets; lateral leaves boat-shaped, 4-7 mm, overlapping margins of facial leaves, with conspicuous, white stomatal bands abaxially, apex slightly incurved. Cones terminal, solitary. Pollen cones cylindric; microsporophylls 12-20. Seed cones subglobose; cones scales 6-8, flat, woody, usually mucronate below apex, each fertile scale with 3-5 seeds. Seeds with 2 lateral, narrow wings. Cotyledons 2.

One species: Japan; introduced in China.