Trout Lily Reproduction

Erythronium americanum

Clump of Yellow Trout Lily (L) and developing stolon (R)

Yellow Trout Lily (Erythronium americanum) is a common spring ephemeral in Michigan. Most colonies consist of some two-leaved flowering plants and numerous single leaved non-flowering plants. Many of the non-flowering plants are not seedlings but are produced via stolons. Stolons, from Latin stolo meaning shoot, twig, or branch, are runners that extend on top of the ground and then the tips burrow into the ground sometimes emerging again. New plants develop and root at these tips. Normally the stolons are covered by the duff, but areas with disturbed duff expose the coils of stolons. Plants in the colonies I examined had 0 to 3 stolons each. In a good year a single stolon produces up to four new plants. Look for the stolons in rich woods. They can be found even after the leaves have died down.

Erythronium americanum

Yellow Trout Lily leaves and stolons (L) and Canada Mayflower leaves with Trout Lily stolons (R)

Copyright 2017 by Donald Drife

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4 thoughts on “Trout Lily Reproduction

  1. I will second that as well. Every single spring I find these guys and wonder what the heck they are, given that both ends go under the soil. I see a ton of people misidentify them as fungi on iNaturalist, and now I actually know what they are to correct them 🙂

  2. To echo Peter, I spent two years trying to figure out what these are, as I would find them constantly while looking for morels in the spring. Thank you SO MUCH for putting this resource on your blog!

  3. So pleased to see this reference to these trout lily stolons exiting and reentering the ground. They look like little handles at first. Probably very few people notice them and yours is the first online reference I’ve found so far. Thank you.

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