The story
From the shape of the indusia (membranes) that cover the fern's sori (spores).
Etymology from Wiktionary, CC BY-SA 4.0.
buckler fern
Today it means: Certain species of the fern genera, principally of genus Dryopteris. Full definition →
Today it means: Certain species of the fern genera, principally of genus Dryopteris. Full definition →
From the shape of the indusia (membranes) that cover the fern's sori (spores).
Etymology from Wiktionary, CC BY-SA 4.0.