Postiella is a monotypic genus of flowering plants belonging to the family Apiaceae.

[1] It only contains one known species, Postiella capillifolia (Post) Kljuykov[1] Its native range is Eastern Mediterranean and is found in Lebanon and Syria.

[1] The genus name of Postiella is in honour of George Edward Post (1838–1909), who was an American surgeon, academic and botanist.

[2] The genus was circumscribed by Evgeniy Vasilyevich Kljuykov in Byull.

vol.90 (Issue 2) on page 103 in 1985.