1. Slender fern of northern North America with shining chestnut-coloured stipes and bipinnate fronds with usually distinct marginal sori
   - northern woodsia, flower-cup fern, Woodsia alpina

Type of: woodsia

• Ural-Altaic
• Uralic
• Uralic language
• Urals
• uranalysis
• Urania
• Uranian
• uranic
• uraninite
• uranium
• uranium 235
• uranium 238
• uranium ore
• urano-
• uranography
• uranologist
• uranology
• uranoplasty
• Uranoscopidae
• Uranus
• uranyl
• uranyl group
• uranyl nitrate
• uranyl oxalate
• uranyl radical