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Wall-rue Fern
Asplenium ruta-muraria

Wall-rue is rare in Connecticut; it is listed as a threatened species.

• Family: Aspleniaceae
• Habitat: dry, shaded limestone outcroppings
• Height: 3-8 inches
• Location of spores: on veins on undersides of leaflets (see middle photo)
• Stipe (leaf stalk): smooth, delicate, grooved green; dark brown and scaly at base.
• Growth pattern: asymmetric clump
• Persistence: evergreen

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Asplenium ruta-muraria


Underside of a frond, showing the spore-bearing structures. The black dots are individual spores cases, each containing 64 spores.


True to its name, wall rue almost always grows on vertical rocky surfaces.


Last updated November 25, 2005. © 2005 Connecticut Botanical Society. All rights reserved.