Common nameOblong Woodsia Woodsia ilvensis © Natural History Museum Latin names ClassPteridopsida OrderPolypodiales FamilyAthyriaceae GenusWoodsia Speciesilvensis Alternative Family nameWoodsiaceae Geographic details Habitatarctic alpine cliffs Soil typeacidic Distributionmountains N British Isles NativeYes General Plant heightsmall BranchedNo Plant colourdeep green Habittufted Conservation statusProtected Wikimedia Urlhttps://species.wikimedia.org/wiki/Woodsia_ilvensis Leaf details Separate fertile leavesNo Leaf shapeoblong-lanceolate Pinnae2-pinnate WintergreenYes Spore details HomosporeYes Rhizome details Rhizome descriptiontufted with few crowns Rhizome scalestriangular-lanceolate Rhizome positionupright Sori details Sori shaperound Sori descriptionoften covering segment Sori placeon lateral vein Indusium details Indusium presentYes Indusium shaperound Indusium descriptionmargin deeply cut