1. Any of several tropical ferns having more or less sword-shaped fronds including one from which the Boston fern developed

Derived forms: sword ferns

Type of: fern

Part of: genus Nephrolepis, Nephrolepis

Encyclopedia: Sword fern

• order Saurischia
• order Sauropterygia
• order Scandentia
• order Sclerodermatales
• order Scleroparei
• order Scorpionida
• order Scrophulariales
• order Secotiales
• order Selaginellales
• order Siluriformes
• order Siphonaptera
• order Siphonophora
• irritably
• irritant
• irritate
• irritated
• irritatedly
• irritating
• irritatingly
• irritation
• irritative
• irrupt
• irruption
• irruptive
• IRS