单词 | rusty woodsia |
释义 | rusty woodsianoun The fern Woodsia ilvensis (family Athyriaceae), of northern regions of North America, Europe, and Asia, which has a reddish-brown scaly coating on the undersurface of its fronds. OriginMid 19th century; earliest use found in Henry David Thoreau (1817–1862), author and naturalist. |
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