The Tallgrass Prairie in Illinois
Ranunculus rhomboideus (prairie, plains, or Labrador buttercup) [Ranunculaceae, Buttercup Family] — listed as ENDANGERED in Illinois, where it is found the northernmost counties
Ratibida pinnata (drooping, yellow, or gray-headed coneflower or pinnate prairie coneflower) [Asteraceae, Sunflower Family]
Rosa carolina (pasture or Carolina rose) [Rosaceae, Rose Family]
- habitat of plant in black-soil prairie; Belmont Prairie Nature Preserve, DuPage County, Illinois
- habitat in sand prairie; Illinois Beach State Park, Lake Co., Illinois
- habit of plant in flower, Harlem Hills Nature Preserve, Winnebago County, Illinois
- closeup of leaf; Prospect Cemetery Prairie Nature Preserve, Ford County, Illinois
- flower; Belmont Prairie Nature Preserve, DuPage County, Illinois
- flower; west of Mahomet, Piatt County, Illinois
- flower; Harlem Hills Nature Preserve, Winnebago County, Illinois
- habit of plant with fall color and nearly mature fruits; Prospect Cemetery Prairie Nature Preserve, Ford County, Illinois
- plant with fruits
- mature fruits ("hips"); Loda Cemetery Prairie Nature Preserve, Iroquois County, Illinois note that the sepals usually fall off when fruits are ripe
- macro of achenes ("seeds") removed from fruits
- Click here for a distribution map in Illinois from the Illinois Plant Information Network
Rosa multiflora (multiflora rose) [Rosaceae, Rose Family] NOT native to Illinois and an invasive weed
Rosa setigera (prairie rose) [Rosaceae, Rose family]
Rudbeckia hirta (black-eyed Susan) [Asteraceae, Sunflower Family]
Rudbeckia subtomentosa (fragrant or sweet coneflower or sweet black-eyed Susan) [Asteraceae, Sunflower Family]
Rudbeckia triloba (brown-eyed Susan) [Asteraceae, Sunflower Family]
Ruellia humilis (wild petunia) [Acanthaceae, Acanthus Family]
Alphabetical by Genus:
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Created November 1997; updated 25 October 2004