10th Symposium on the Flora of Southeastern Serbia and ...

10 th <strong>Symposium</strong> on the Flora of Southeastern Serbia and Neighbouring regions,Vlasina 17 to 20 June 2010The taxonomic review of the genus Linum L. (Linaceae) inthe flora of Eastern EuropeSvetlova, A., Ivanova, A.Komarov Botanical Institute, St. Petersburg, Russiasvetlova_aa@mail.ruAccording to our revision, genus Linum is represented in Eastern Europe by23 species including 6 subspecies that belong to 2 subgenera, 6 sections and 6subsections. System of the genus is changed and augmented. One new subgenus(Subgen. Cathartolinum (Reichenb.) Svetlova), one new section (Sect. TubilinumSvetlova) and 4 new subsections (Subsect. Longiunguiculata Svetlova, Subsect.Flava Svetlova, Subsect. Taurica Svetlova, Subsect. Grandiflora Svetlova) aredescribed. Key words: Linum, taxonomic review, Eastern Europe. Linum L. is thelargest genus with the most compicated system in Linaceae DC. ex Perleb. Itnumbers more than 200 species that belong to 2 subgenera and 9 sections. Linumspecies dwell in moderate areas in both hemispheres (Svetlova, 2009). The highestspecies diversity was found in the Mediterranean (78 species; Romo, 1989) and inNorth America (47 species; Rogers, 1984). The Mediterranean is the center of originof Linum genus (Wulff, 1940). The most superspecies taxa are represented in theMediterranean; some of them include species with the most primitive characters. Inthe regions adjacent to the Mediterranean number of species is considerably lower:36 in Western Europe (Ockendon, Walters, 1968), less then 10 in Northern Africa,39 in Asia Minor (Davis, 1967). We revised and adjusted the species composition ofLinum L. genus in Eastern Europe. Material and Methods The study of Linumspecies was based on critical analysis of herbal materials including typical specimenfrom the following Herbaria: LE, LECB, WIR, MW, MWG, MOSP, MHA, RV,RWBG, YALT, SIMF, CSAU, KW, BP. Results and discussion According to ourreview, in the studied area Linum genus is represented by 23 species with 6subspecies that belong to 2 subgenera, 6 sections and 6 subsections. System of thegenus was changed and augmented. One new subgenus, one new section and 4 newsubsections were described. Investivations allowed to separate L. catharticum insubgenus Cathartolinum (Reichenb.) Svetlova (Svetlova, 2008), and to separate L.nodiflorum into monotypic Sect. Tubilinum Svetlova (Svetlova, 2006a). Taxonomicrevision of Sect. Adenolinum (Svetlova, 2005a, b), Linum (Svetlova, 2007a) andSyllinum (Svetlova, 2006b, 2007b) allowed to adjust their species composition andto separate some of them into new subsections. Sect. Adenolinum: Subsect.Longiunguiculata Svetlova; Sect. Syllinum: Subsect. 1. Flava Svetlova, Subsect. 2.Taurica Svetlova; Sect. Linum: Subsect. Grandiflora Svetlova. The short conspectusof Linum genus in flora of Eastern Europe is enclosed. The sequence of taxa in theconspectus conforms our ideas of their evolutionary relations. More often the listed23