You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Language UND Remove constraint Language: UND Place Ptari-tepuí, between "Cave Rock" and base of high sandstone bluffs. Remove constraint Place: Ptari-tepuí, between "Cave Rock" and base of high sandstone bluffs. Place South America Remove constraint Place: South America Place Venezuela Remove constraint Place: Venezuela Topic Hymenophyllaceae Remove constraint Topic: Hymenophyllaceae Topic Hymenophyllales Remove constraint Topic: Hymenophyllales Topic Plantae Remove constraint Topic: Plantae