Asplenium ceterach (syn. Ceterach officinarum) is a fern species commonly known as Rustyback. It is characterised by a short rhizome which gives rise to several green fronds that have a pinnated lamina with trichomes on the abaxial (lower) surface but not the adaxial (upper) one. These trichomes (hairs) are orange-brown in colour hence the name rustyback.
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