Definition of wall rue in English:

wall rue

Line breaks: wall rue

noun

A small delicate spleenwort (fern) which resembles rue, growing on walls and rocks in both Europe and North America and sensitive to atmospheric pollution.
  • Asplenium ruta-muraria, family Aspleniaceae
More example sentences
  • In the British Isles, wall rue was considered a specific remedy for scrofula many years ago.
  • The tiny A. ruta-muraria or wall rue is another lovely species in this genera.
  • Look on the left for two kinds of ferns growing on the stone wall, these are the tiny wall rue and slightly larger maiden hair spleenwort.

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Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily