در ايران ISATIS بررسي جنس

A STUDY OF THE GENUS ISATIS IN IRAN

This paper presents the findings of a research on the genus Isatis L. (Brassicaceae) in Iran. Isatis specimens kept in major herbaria of Iran were examined carefully. Fresh specimens were collected from Tehran, Mazandaran, Semnan, Hamedan, Kurdistan, W. Azarbaijan , E. Azarbaijan, Ardebil and Ghazvin provinces. Images of type or otherwise valid specimens kept in Viena, Munich, Montpollier and Kew herbaria were obtained and considered in the research. The relationships between the species were also studied using numeric taxonomy method. The species of the genus Pachypterygium found in Iran were included in the numeric taxonomy beside the genus Isatis L. Hierarchical clustering analysis was carried out based on 69 characteristics. Dendrograms and plots were drawn. One new subspecies of I. cappadocica was also reported to the world: Isatis cappadocica Desv. subsp. kurdica Sajedi & Sharifnia, subsp. nov. Differs a cetro subspeciebus fructibus majoribus usque ad 23 mm longis et 35 mm latis, f reniformis, truncatis. Typus: Iran, Kurdistan, Bijar, Kuh-e Hamzeharab, 2000-2500 m, Sajedi, Aghabeigi & Eskandari (holotypus IRAN 391 10). Other findings of the research are summarized as follows: •Two species, namely, I. ornithorhynchus and I. spectabilis and one subspecies, I. tinctoria subsp. tomentella, were reported to the flora of Iran. •The occurence of I. tinctoria in Iran was clarified and documented. •Three species of the genus Pachypterygium, namely, P. brevipes, P. multicaule and P. stocksii, together with I. trachycarpa from the section Isatis were transferred to the section Eremoglaston of the genus !saris L. •A new key was developed to the genus Isatis and the subspecies of 1. cappadocica. Geographical distribution maps of all the species were prepared. As a result of the present study, the number of members of the genus Isatis L. reached to 22 species.