Erythronium americanum. Adder's Tongue.
Botanical name:
Classic texts: The American Eclectic Dispensatory, by John King, 1854.
Erythronium americanum Ker-Gawl.
Engl.: adder's tongue, dogtooth violet, amberbell, American adder's tongue, dog's tooth violet, erythronium, fellow snowdrop, lamb's tongue, rattlesnake violet, scrofula root, serpent's tongue, snake leaf, trout-lily, yellow erythronium, yellow snakeleaf, yellow snowdrop.
