You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Mason Remove constraint Place: Mason Place Riverton Twp., ca. 8 mi. SE of Ludington. Remove constraint Place: Riverton Twp., ca. 8 mi. SE of Ludington. Topic Caryophyllales Remove constraint Topic: Caryophyllales Topic Montiaceae Remove constraint Topic: Montiaceae Topic Plantae Remove constraint Topic: Plantae