1. The Herbarium, Singapore Botanic Gardens, 1 Cluny Road, 259569, Singapore;, Email: jana_skornickova@nparks.gov.sg
2. Department of Botany, National Museum in Prague, Cirkusová 1840, 193 00 Praha 9, Czech Republic
3. Department of Botany, Faculty of Science, Charles University, Benátská 2, 128 01 Praha 2, Czech Republic
4. Department of Botany, Faculty of Science, Charles University, Benátská 2, 128 01 Praha 2, Czech Republic, Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 9, 845 23 Bratislava, Slovak Republic