The taxonomic status of Teucrium L. The aim of the present investigation was to study sect. Polium (Mill). Schreb. in Flora Iranica is the morphology and taxonomy of Teucrium sect. reviewed. A few taxonomic changes have become Polium species in Iran. A few taxonomic changes necessary in section Polium in view of the material have become necessary in section Polium in view of investigated for a new edition of the Flora. Revision of the material investigated for a new edition of the extensive herbarium material and detailed studies of Flora Iranica. In addition, good material was plants in the field revealed that five species of collected and observations made of living populations Teucrium sect. Polium occur in Iran. A new species on a recent expedition. This allowed a better of this section is reported from the dry-stone zone in a understanding of the section. mountainous region in Fars Province of Iran. This This article follows previous taxonomic studies new species is described and illustrated as T. conducted on other groups of Lamiaceae in Iran abolhayatensis Ranjbar & Mahmoudi. Teucrium (Ranjbar & Pakatchi, 2014; Ranjbar et al., 2014, gabrielae Bornm., in recent treatments recognized 2015; Ranjbar & Mahmoudi, 2015). The present as a subspecies or variety of T. stocksianum Boiss., is treatment is based on collections kept in the BASU reinstated at species level. A key, annotated herbarium and on photos of type specimens at B, G, enumeration of species, and notes on the distribution JE, LINN, and W. In addition, fresh material of most of the species are also provided. In addition, some taxa has been studied and field observations have aspects of the nomenclature of T. gnaphalodes L’He´r. been conducted. are discussed, and lectotypes are designated for T. gabrielae and T. stocksianum.
