wall rue

American  

noun

1. a small, delicate fern, Asplenium rutamuraria, having fan-shaped leaflets and growing on walls and cliffs.

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wall rue British  

noun

1. a delicate fern, Asplenium ruta-muraria, that grows in rocky crevices and walls in North America and Eurasia

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Etymology

Origin of wall rue

First recorded in 1540–50

Example Sentences

The humble Wall Rue and the Wall Spleenwort grow on walls chiefly, sometimes on rocky banks.

From Project Gutenberg

As curative simples, a brief consideration will be given here to the common male and female Ferns, the Royal Fern, the Hart's Tongue, the Maidenhair, the common Polypody, the Spleenwort, and the Wall Rue.

From Project Gutenberg