You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Along Rio Grandi Creek, Ravenna Tp., ca. 3 mi. SSW of Ravenna. Remove constraint Place: Along Rio Grandi Creek, Ravenna Tp., ca. 3 mi. SSW of Ravenna. Topic Cyperaceae Remove constraint Topic: Cyperaceae