| TRY plant trait database–enhanced coverage and open access J Kattge, G Bönisch, S Díaz, S Lavorel, IC Prentice, P Leadley, ... Global change biology 26 (1), 119-188, 2020 | 1512 | 2020 |
| Klíč ke květeně České republiky K Kubát, L Hrouda, J Chrtek jun., Z Kaplan, J Kirschner, J Štěpánek Academia, Praha, 2002 | 1054* | 2002 |
| Checklist of vascular plants of the Czech Republic. J Danihelka, JJ Chrtek, Z Kaplan | 561 | 2012 |
| Catalogue of alien plants of the Czech Republic: checklist update, taxonomic diversity and invasion patterns P Pyšek, J Danihelka, J Sádlo, J Chrtek, M Chytrý, V Jarošík, Z Kaplan, ... Preslia, 2012 | 530 | 2012 |
| An account of the species of Potamogeton L. (Potamogetonaceae) G Wieglet, Z Kaplan Folia Geobotanica 33 (3), 241-316, 1998 | 228 | 1998 |
| Juncaceae 2: Juncus subg J Kirschner, H Balslev, SE Clemants, B Ertter, M Alvarez, L Hämet-Ahti, ... Juncus, Species Plantarum: Flora of the World 7, 1-336, 2002 | 168* | 2002 |
| Key to the flora of the Czech Republic K Kubát, L Hrouda, J Chrtek, Z Kaplan, J Kirschner, J Štěpánek Academia, Praha, 2002 | 163 | 2002 |
| Pladias database of the Czech flora and vegetation M Chytrý, J Danihelka, Z Kaplan, J Wild, D Holubová, P Novotný, ... Preslia 93 (1), 1-87, 2021 | 150 | 2021 |
| Klíč ke květeně České republiky [Key to the flora of the Czech Republic], ed. 2 Z Kaplan, J Danihelka, J Chrtek, J Kirschner, K Kubát, M Štech, ... Academia, Praha: Czech Republic, 2019 | 133* | 2019 |
| A Taxonomic Revision of Stuckenia (Potamogetonaceae) in Asia, with Notes on the Diversity and Variation of the Genus on a Worldwide Scale Z Kaplan Folia Geobotanica 43, 159-234, 2008 | 133 | 2008 |
| Phenotypic plasticity in Potamogeton (Potamogetonaceae) Z Kaplan Folia Geobotanica 37 (2), 141-170, 2002 | 133 | 2002 |
| Flora and phytogeography of the Czech Republic Z Kaplan Flora and Vegetation of the Czech Republic, 89-163, 2017 | 119 | 2017 |
| Flora and phytogeography of the Czech Republic Z Kaplan Preslia 84, 505-573, 2012 | 119* | 2012 |
| Plant distribution data for the Czech Republic integrated in the Pladias database J Wild, Z Kaplan, J Danihelka, P Petřík, M Chytrý, P Novotný, M Rohn, ... Preslia 91 (1), 1-24, 2019 | 103 | 2019 |
| Distributions of vascular plants in the Czech Republic. Part 1. Z Kaplan, J Danihelka, J Štěpánková, P Bureš, J Zázvorka, Z Hroudová, ... Preslia 87 (4), 417-500, 2015 | 76* | 2015 |
| Molecular evidence for a natural primary triple hybrid in plants revealed from direct sequencing Z Kaplan, J Fehrer Annals of Botany 99 (6), 1213-1222, 2007 | 71 | 2007 |
| Revision of chromosome numbers of Potamogetonaceae: a new basis for taxonomic and evolutionary implications. Z Kaplan, V Jarolimova, J Fehrer | 67 | 2013 |
| a J Danihelka, 2022 P Pyšek, J Sádlo, J Chrtek, M Chytrý, Z Kaplan, J Pergl, A Pokorná, ... Catalogue of alien plants of the Czech Republic (3rd edition): Species …, 0 | 66 | |
| Hybridization of Potamogeton species in the Czech Republic: diversity, distribution, temporal trends and habitat preferences. Z Kaplan | 57 | 2010 |
| Evidence for the hybrid origin of Potamogeton ×cooperi (Potamogetonaceae): Traditional morphology-based taxonomy and molecular techniques in concert Z Kaplan, J Fehrer Folia Geobotanica 39 (4), 431-453, 2004 | 57 | 2004 |
