Asplenium ruta-muraria

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Wall rue
Asplenium ruta muraria2.jpg
Conservation status

Secure (NatureServe)
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Polypodiopsida
Order: Blechnales
Family: Aspleniaceae
Genus: Asplenium
Species: A. ruta-muraria
Binomial name
Asplenium ruta-muraria

Asplenium ruta-muraria is a species of fern commonly known as wall-rue. In Germany, it is known as Mauerraute or Mauerstreifenfarn. It is a very small epipetric species, growing exclusively on limestone and other calcareous rocks. It is native to both Europe and eastern North America. In Europe, it commonly invades masonry and is a common species, while in the United States, it is more difficult to find, favoring pockets in very well-weathered and rather dry limestone outcrops.

Sori of A. ruta-muraria