Abstract
A new endemic species from western Iran, Teucrium elymaiticum Attar, Sotoodeh & Mirtadzadini, spec. nova is described. It belongs to section Scordium. Considering the combination of some characteristics like indumentum, bracts, pedicel, calyx, corolla size, and nutlet shape and size, the new species is related to T. scordium subsp. scordioides (Schreb.) Arcang.. The differences between these two species are highlighted. Images, distribution map and an updated identification key for the genus are presented.
Highlights
Teucrium L. is a large genus of Lamiaceae with more than 260 species in the world (Tutin & Wood 1972; Harley et al 2004)
Based on the general habit of the plant, leaf type, calyx shape, and inflorescence structure, the genus has been divided into seven sections, six of them are included in the Flora Iranica (Rechinger, 1982)
Based on some morphological characters, Teucrium elymaiticum belongs to section Scordium Boiss., with affinities to T. scordium subsp. scordioides
Summary
Teucrium L. is a large genus of Lamiaceae with more than 260 species in the world (Tutin & Wood 1972; Harley et al 2004). This genus is distributed in the Mediterranean region, which is a major speciation center of the genus (Tutin & Wood, 1972; Cantino et al, 1992; Navarro & El Oualidi, 2000; Harley et al, 2004; Crespo et al, 2018). Based on the general habit of the plant, leaf type, calyx shape, and inflorescence structure, the genus has been divided into seven sections, six of them are included in the Flora Iranica (Rechinger, 1982). (with bilabiate calyx), a hyrcanian element, grows in north of Iran. Some species like T. polium L. and T. orientale L., are widely distributed in steppes, arid, and semiarid regions of Iran (Eshratifar et al, 2011)
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