You searched for: Place Starved Rock State Park, west of South Ottawa, ridge slope (north-facing) between branches of Tonti Canyon, Starved Rock 7.5' quadrangle, south side of IL Rt 71, south of Illinois River. Remove constraint Place: Starved Rock State Park, west of South Ottawa, ridge slope (north-facing) between branches of Tonti Canyon, Starved Rock 7.5' quadrangle, south side of IL Rt 71, south of Illinois River. Topic Cyperaceae Remove constraint Topic: Cyperaceae