Lukáš Jirka - e-mail:lukas@ornyx.com

Tomáš Hauer - University of South Bohemia, Faculty of Biological sciences, Dept. of Botany, Branišovská 31, České Budějovice, CZ-370 05 and Academy of Sciences of the Czech republic, Institute of Botany, Trebon, Czech Republic. E-mail:gibon@bf.jcu.cz