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Adder's tongue is the common name of erythronium americanum. The flowers are yellow with recurved segments. The plant is native from east Canada to Florida and Arkansas.

Adder's Tongue

Adder's tongue is the common name of erythronium americanum. The flowers are yellow with recurved segments.…

"Dog's-tooth violet (Erythronium americanum). Stages of development from the seed. 1-5 show the stage of development in each of five successive years. Full explanation in the text. 6, Bulb showing a surface bud (the sprout has been destroyed)." -Gager, 1916

Dog's-Tooth Violet Stages

"Dog's-tooth violet (Erythronium americanum). Stages of development from the seed. 1-5 show the stage…

Two species of the lily family (Liliaceae): right, yellow adder's tongue (Erythronium Americanum); left, white adder's tongue (Erythronium albidum).

E. Americanum and E. Albidum

Two species of the lily family (Liliaceae): right, yellow adder's tongue (Erythronium Americanum); left,…