Erythronium albidum, commonly known as the white fawnlily or white trout lily, is a small herbaceous geophyte in the lily family. It is also known as adder's tongue, white dog's-tooth violet, serpent's tongue, trout lily, deer tongue, creeklily and yellow snowdrop. Large numbers of this plant indicate that the woodland has never been subjected to heavy machinery, where it would be unable to grow due to soil compaction.

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