Asplenium ruta-muraria
| Wall rue | |
|---|---|
 | |
| Conservation status | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Pteridophyta |
| Class: | Polypodiopsida |
| Order: | Blechnales |
| Family: | Aspleniaceae |
| Genus: | Asplenium |
| Species: | A. ruta-muraria |
| Binomial name | |
| Asplenium ruta-muraria L. | |
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