TY - JOUR T1 - Molecular systematics of Echinops L. (Asteraceae, Cynareae): a phylogeny based on ITS and trnL-trnF sequences with emphasis on sectional delimitation JF - Taxon Y1 - 2010 A1 - Sánchez-Jiménez, I. A1 - Lazkov, G.A. SP - 698 EP - 708 VL - 59 IS - 3 ER - TY - JOUR T1 - Combining numerical and traditional approaches to classify Echinops sphaerocephalus invaded communities in the Czech Republik JF - Phytocoenologia Y1 - 2009 A1 - Petřík, P. A1 - Dostálek, J. A1 - Neuhäuslová, Z. SP - 253 EP - 264 VL - 39 ER -