[4][5] The range is from Labrador south to Georgia, west to Mississippi, and north to Minnesota.

[8][3] Trout lilies bloom in early spring before the trees growing above them develop leaves.

[3] Erythronium americanum does not reproduce very effectively via sexual reproduction with only 10% of pollinated flowers developing seeds.

The corms are mostly composed of storage tissue containing large amounts of energy rich starch.

[2][4] The individuals within a colony will often reproduce asexually via a "dropper" or from small bulbs budding off of the main corm.

americanum having a capsule with a rounded, truncate, or short-apiculate tip and erect stigma lobes without groves.

harperi has a distinctly apiculate capsule apex and stigma lobes which are both grooved and recurved.