The Tallgrass Prairie in Illinois
Images of Prairie Plants — Genera Beginning with the Letter "O"
- habit of plant in flower; sand prairie, North Dunes Nature Preserve, Illinois Beach State Park, Lake County
- another plant in flower; same locality
- flat-topped inflorescence (corymb); same locality
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
- habitat; calcareous swale at North Dunes Nature Preserve, Illinois Beach State Park, Lake County
- habit of plant in flower; calcareous fen, Mud Lake, Chain-O-Lakes State Park, Lake County, Illinois
- another plant in flower; North Dunes Nature Preserve, Lake County Illinois — note the large leaves at the base of the plant
- flat-topped inflorescence (corymb); same locality
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
- habit of plant in flower; sedge meadow, south of Marseilles, La Salle County, Illinois
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
- habitat; Wadsworth Prairie Nature Preserve, Lake County, Illinois
- habit of plant in flower; hill prairie, Site "M"/Panther Creek, Cass County, Illinois
- flat-topped inflorescence (corymb); Paintbrush Prairie Nature Preserve, Cook County, Illinois
- another inflorescence with a painted lady butterfly; Loda Cemetery Prairie Nature Preserve, Iroquois County, Illinois
- habit of plant in fruit; Temperance Hill Cemetery Prairie Nature Preserve, Lee County, Illinois
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
Listed as ENDANGERED in Illinois
- habit of plant in flower; Savanna Army Depot / Lost Mound area, Jo Daviess County, Illinois
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
- habit of plant in flower ; top of sandstone bluffs along Illinois River, South Ottawa, LaSalle County, Illinois
- flowers; same locality
- longitudinal section of flower; Braidwood Dunes and Savanna Nature Preserve, Will County, Illinois
- plant with fruits; Quiver Prairies, Sand Ridge State Park, Mason County, Illinois
- photo of one tiny spine (glochid) taken with scanning electron microscope
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
- habit of plant in flower; hill prairie, Chautauqua, Jersey County, Illinois
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
[Oxalidaceae, Sorrel Family]
- habitat; Revis Hill Prairie Nature Preserve, Mason County, Illinois
- habit of plant in flower; Quiver Prairies, Sand Ridge State Park, Mason County, Illinois
- another plant in flower; cultivated in my yard, Champaign, Illinois
- one more habit image; same locality
- macro of flowers in longitudinal section
- plant with developing fruits; Hanover Bluff Nature Preserve, JoDaviess County, Illinois
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
Alphabetical by Genus:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Created November 1997; updated 25 October 2004