Common nameWilson's filmy fern Hymenophyllum wilsonii © Natural History Museum Latin names ClassPteridopsida OrderHymenophyllales FamilyHymenophyllaceae GenusHymenophyllum Specieswilsonii Geographic details Habitatsteep rock faces high humidity low altitude Soil typeacidic DistributionLake district, W Wales, Scotland, Ireland NativeYes General Plant heightsmall BranchedNo Plant colourolive green Habitarching lvs at intervals Conservation statusnot threatened Wikimedia Urlhttps://en.wikipedia.org/wiki/Hymenophyllum_wilsonii Leaf details Separate fertile leavesNo Leaf shapelinear Pinnae1-pinnate WintergreenYes Spore details Spore descriptiongreen HomosporeYes Rhizome details Rhizome descriptionwiry long Rhizome positioncreeping Sori details Sori shapelipped pocket Sori descriptionentire lip Sori placeedge of pinna segments Indusium details Indusium presentNo