RESEARCH PAPER A taxonomic revision of Scutellaria sect. Lupulinaria subsect. Lupulinaria (Lamiaceae) in Iran Massoud Ranjbar, Chonour Mahmoudi Department of Biology, Herbarium Division, Bu-Ali-Sina University, PO Box 65175/4161, Hamedan, Iran A taxonomic revision of Scutellaria L. sect. Lupulinaria subsect. Lupulinaria (Lamiaceae) for Iran is presented. The present study is based on morphological characters of the speci- mens from the authors’ expeditions and other herbarium collections. A new species is described and one subspecies is elevated to the species rank. In addition, Scutellaria chorassanica Bunge is treated as a distinct species. With this treatment the number of species in subsect. Lupulinaria in the country is increased to 25 taxa (21 species and 4 subspecies) enumerated here. Lectotypes are also designated for S. araxensis, S. litwino- wii, S. luteocaerulea, S. mianensis, S. persica, S. theobromina and S. tomentosa. Finally, a key to all species of the section is provided. Keywords: Labiatae, lectotypification, taxonomy Submitted: December 18, 2016 Revised: August 12, 2017 Accepted: August 23, 2017 1 Introduction Scutellaria L., with 466 species, is one of the largest genera in the family Lamiaceae (Govaerts et al. 2011). It shows a subcosmopolitan distribution whose species are mainly found on the temperate mountains in the tropics and Southern Hemisphere. The genus is absent in the Arctic regions of Northern Hemisphere, desert regions of North Africa, the Amazon basin and the Australia conti- nent except for Victoria and New South Wales. The most diversity occurs in Irano-Turanian phytogeographic region of Asia. In addition, East Mediterranean and Andes are considered as secondary centers (Paton 1990a, 1990b; C ß ic ßek & Yaprak 2013). In Flora Iranica the genus is represented by 40 spe- cies, of which only 22 species grow in Iran and 10 species are endemic (Rechinger 1982). According to Edmondson (1982) Scutellaria was represented by 38 taxa at specific and subspecific ranks under 17 species in Flora of Turkey. Most of these infraspecific taxa belong to S. orientalis L., which is the most problematic group in the subsection Lupulinaria. When most of the taxa in the group were first described, they were trea- ted at specific ranks (Edmondson 1982; C ß ic ßek 2008; C ß ic ßek & Keteno glu 2011; C ß ic ßek & Yaprak 2011). C ß ic ßek (2008) recently provided a revision of the genus Scutel- laria in Turkey. These new results, gained from analy- ses of morphological, palynological characteristics and chromosome numbers and most of the taxa in the S. orientalis group such as S. pinnatifida, S. sosnowskyi, S. virens are accepted at specific rank. Consequently, the genus Scutellaria in Turkish flora was evaluated under 32 taxa, 24 species, 1 hybrid species and 13 subspecies. Later, a new overview of the genus in Iran was provided by Jamzad (2012) and 5 species were added to the flora of Iran, namely S. amphichlora, S. ramazanica, S. sosnovskyi, S. szovitziana and S. virens, which were ignored in Flora Iranica. With this treatment the number of species in Scutellaria in the Iran is increased to 27 species enumerated flora of Iran. They are distributed all over the country, mainly in mountainous to sub-mountainous areas, but with a few wet places and also in forests. The name Scutellaria is derived either from the Latin word “scutella” meaning a dish (Borror 1971), which describes the lower half of the calyx after mericarp dissemination, or the Latin word “scutellum” meaning a little shield, probably refer- ring to the projection from the upper half of the calyx (Lane 1976). Correspondence: Massoud Ranjbar, Department of Biology, Herbarium Division, Bu-Ali-Sina University, PO Box 65175/ 4161, Hamedan, Iran e-mail: ranjbar@basu.ac.ir © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1 Feddes Repertorium 2017, 0, 1–39 DOI: 10.1002/fedr.201600027