Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Brickellia mosieri (Florida Brickell-bush) and Linum carteri var. carteri (Carter's Small-flowered Flax)

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We, the U.S. Fish and Wildlife Service (Service), designate critical habitat for Brickellia mosieri (Florida brickell-bush) and Linum carteri var. carteri (Carter's small-flowered flax) under the Endangered Species Act of 1973, as amended (Act). We designate as critical habitat approximately 1,062 hectares (ha) (2,624 acres (ac)) for B. mosieri and approximately 1,072 ha (2,649 ac) for L. c. var. carteri. The critical habitat areas for these plants, located entirely in Miami-Dade County, Florida, largely overlap, for a combined total of approximately 1,095 ha (2,706 ac). Critical habitat for both plants includes both occupied and unoccupied habitat. The Service determined that the unoccupied units are essential for the conservation of the plants, to provide for the necessary expansion of current Brickellia mosieri and Linum carteri var. carteri populations, and for reestablishment of populations into areas where these plants previously occurred. The effect of this regulation is to extend the Act's protections to these plants' critical habitats.