Pensastaceae
Pensastaceae is a small and recently recognized family of flowering plants within the order Saxifragales. The family was formally described in 2016 by botanists studying phylogenetic relationships among Saxifragales, though its members were previously classified under other families, such as Saxifragaceae or Crassulaceae. The name *Pensastaceae* is derived from the genus *Pensastia*, its sole recognized genus, which contains only one species, *Pensastia palustris*.
*Pensastia palustris* is a perennial herb native to the eastern United States, particularly found in wetland
Phylogenetic studies indicate that Pensastaceae is closely related to the family Crassulaceae, sharing some morphological traits
Due to its limited distribution and specialized habitat requirements, *Pensastia palustris* is considered a rare plant