TAILIEUCHUNG - On the circumscription of Isatis tinctoria L. (Brassicaceae) in Iran
In the course of preparing a revision of Isatis L. and its allies in Iran, we verified Isatis tinctoria L. among the material studied. Although it has been previously recorded for Iran, we give a more extensive description and a map of its distribution in Iran. A key to distinguishing this species from its allies and a discussion of the affinities in this group are provided. | Turk J Bot 30 (2006) 455-458 © TÜB‹TAK Research Note On the Circumscription of Isatis tinctoria L. (Brassicaceae) in Iran Hamid MOAZZENI, Shahin ZARRE* Research Centre of Plant Sciences, School of Biology, University College of Science, Tehran University, PO Box: 14155-6455, Tehran - IRAN Received: Accepted: Abstract: In the course of preparing a revision of Isatis L. and its allies in Iran, we verified Isatis tinctoria L. among the material studied. Although it has been previously recorded for Iran, we give a more extensive description and a map of its distribution in Iran. A key to distinguishing this species from its allies and a discussion of the affinities in this group are provided. Key Words: Brassicaceae, Isatis tinctoria, Iran Introduction Isatis L., with about 50 species (Appel & Al-Shehbaz, 2003), is an extremely difficult genus of Brassicaceae (Cruciferae), which is distributed primarily in the northern hemisphere and has an Irano-Turanian distribution pattern (Davis, 1965). According to Hedge (1968) and additions made by Sajedi et al. (2004), Iran, with 19 species, is one of the important diversification centres of the genus. Extractions of I. tinctoria L. are widely used as the Old World blue dye, woad, which became the dominant blue dye in Europe, especially in western Europe. In some parts of the world, it is a noxious weed, and nowadays it is rarely cultivated. Isatis tinctoria L. (woad) is distributed in south-west Asia, Uzbekistan, Russia, Tajikistan, Mongolia, Pakistan, Korea, Kazakhstan, Japan (Shu, 2001), and Europe (Tan, 2002), and is naturalised elsewhere (., North America). In the recently published Flora Hellenica, 2 subspecies have been considered for I. tinctoria (Tan, 2002), while in the Flora of Turkey and the East Aegean Islands, the species is composed of 4 subspecies (Davis, 1965). There are 2 references recording Isatis tinctoria from Iran. Parsa (1951) recorded this species from Kermanshah province .
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