Common nameRustyback Asplenium ceterach © Natural History Museum Latin names ClassPteridopsida OrderPolypodiales FamilyAspleniaceae GenusAsplenium Speciesceterach Geographic details Habitatwet rocks and walls Soil typealkaline DistributionSW W England Ireland Wales NativeYes General Plant heightsmall BranchedNo Plant colourlight green Habitdense tuft Conservation statusnot threatened Wikimedia Urlhttps://species.wikimedia.org/wiki/Asplenium_ceterach Leaf details Separate fertile leavesNo Leaf shapeelliptic-oblanceolate Pinnaepinnatisect WintergreenYes Spore details HomosporeYes Rhizome details Rhizome descriptionshort Rhizome scalesovate-lanceolate Rhizome positionascending Sori details Sori shapelinear-oblong Sori descriptioncovered by overlapping scales Sori placealong vein Indusium details Indusium presentYes Indusium shapelinear-oblong Indusium descriptionrudimentary or absent