A new species, Nepeta sahandica Noroozi & Ajani (Labiatae), is described and illustrated from the high altitudes of the Sahand Mountains in northwestern Iran. Morphological differences of this species from its closest relatives in Nepeta L. sect. Capituliferae (Benth.) Pojark., N. lasiocephala Benth. and N. monocephala Rech.f., are discussed. These species differ mainly in their respective habit, basal and stem leaves, indumentum, and character of bract and calyx. The new species is restricted to the subnival vegetation zone, associated with unstable scree grounds. Nepeta sahandica is classified as Critically Endangered (CR), based on IUCN Red List criteria.
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