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Polystichum
See list of 2 species in this genusReference: Wagner (1993).
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1a. Leaves once-divided, the fertile leaflets contracted and reduced in size compared with the sterile leaflets; sori often confluent and nearly covering the abaxial leaflet surface
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1b. Leaves twice-divided in the basal portion, the fertile leaflets like the sterile and not contracted; sori distinct, not covering the entire abaxial leafule surface
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Each photo represents one species in this genus.