oval-headed sedge

Carex cephalophora

Cyperaceae

Slideshow and species account to come.

For more information:

https://gobotany.nativeplanttrust.org/species/carex/cephalophora/

https://www.illinoiswildflowers.info/grasses/plants/cap_sedge.htm

https://www.minnesotawildflowers.info/grass-sedge-rush/oval-headed-sedge

https://www.friendsofthewildflowergarden.org/pages/plants/carex_cephalophora.html