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Kingdom: Plantae (Plant) Subkingdom: Viridaeplantae (green plants) Infrakingdom: Streptophyta Phylum/Division: Tracheophyta (vascular plants) Subphylum/Subdivision: Pteridophytina (club mosses, horsetails, ferns) Class: Polypodiopsida (ferns) Order: Polypodiales Family: Polypodiaceae (common ferns, licorice ferns) Genus: Polypodium Species: Polypodium glycyrrhiza (licorice fern) Species: Polypodium scouleri (Leathery Polypody, leather-leaf fern)