Prairie Trillium
Trillium recurvatum
These unique, dark trillium plants caught our eye while we were exploring woods in Jersey County, Illinois. This species usually has splotchy green leaves. dailybotany suggested these trillium plants may have upped their anthocyanin production in response to exposure to higher levels of solar radiation. There were a few of these trilliums with dark leaves in the general area, and it may have been a sunnier than usual spot in the understory of the forest there, so this theory makes sense. I still wonder if it's possible this small population carries a genetic mutation... I have explored many woods and never seen trilliums this dark. I love listening to different theories and learning new info.
Trillium recurvatum is native to much of the Mississippi River basin in the central / eastern United States. Eastern Ohio has a few populations, which are listed as potentially threatened by their DNR. There are also a couple isolated populations in North Carolina, but it's debated whether or not they were actually planted long ago. Its closest lookalike with overlapping range is trillium sessile; however, the sepals on s. recurvatum plants curve downward as the flower opens, and the stem is usually much shorter than on t. sessile. This species can grow in habitats ranging from floodplains, to mesic forests and mesic savannas. Often, they're found growing in calcareous soils or over calcium-rich rocks such as limestone.
March 20th, 2024
Jersey County, Illinois, USA
Olivia R. Myers
@oliviarosaline
