Authors: MASSOUD RANJBAR, KAZEM NEGARESH
Abstract: A taxonomic review of Centaurea L. sect. Centaurea (Asteraceae) in Iran was carried out. Seven taxa are recognized and 1 of them is described as a new species: Centaurea joharchii Ranjbar & Negaresh. This new species has been described and illustrated from Khorasan Province, SE Iran. A new combination is proposed: C. kermanshahensis (Wagenitz) Ranjbar & Negaresh. In addition, C. aggregata Fisch. & C.A.Mey. ex DC. subsp. aggregata is typified and C. diffusa Lam. is reported here as a new record for Iran. Finally, a key to all species of the section Centaurea in Iran is provided.
Keywords: Identification key, lectotypification, new species revision, taxonomy
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