| Elevational gradient of vascular plant species richness and endemism in Crete–the effect of post-isolation mountain uplift on a continental island system P Trigas, M Panitsa, S Tsiftsis PLoS One 8 (3), e59425, 2013 | 159 | 2013 |
| Niche analysis and conservation of the orchids of east Macedonia (NE Greece) S Tsiftsis, I Tsiripidis, V Karagiannakidou, D Alifragis Acta Oecologica 33 (1), 27-35, 2008 | 83 | 2008 |
| Factors affecting the distribution and abundance of orchids in grasslands and herbaceous wetlands V Djordjević, S Tsiftsis, D Lakušić, S Jovanović, V Stevanović Systematics and Biodiversity 14 (4), 355-370, 2016 | 64 | 2016 |
| The role of ecological factors in distribution and abundance of terrestrial orchids V Djordjević, S Tsiftsis Orchids phytochemistry, biology and horticulture: fundamentals and …, 2022 | 54 | 2022 |
| Role of way of life, latitude, elevation and climate on the richness and distribution of orchid species S Tsiftsis, Z Štípková, P Kindlmann Biodiversity and Conservation 28, 75-96, 2019 | 50 | 2019 |
| Modelling sexually deceptive orchid species distributions under future climates: The importance of plant–pollinator interactions S Tsiftsis, V Djordjević Scientific reports 10 (1), 10623, 2020 | 48 | 2020 |
| Atlas of the Greek Orchids, Vol I S Tsiftsis, Z Antonopoulos Mediterraneo editions, 2017 | 45* | 2017 |
| Distribution patterns and conservation perspectives of the endemic flora of Peloponnese (Greece) P Trigas, S Tsiftsis, I Tsiripidis, G Iatrou Folia Geobotanica 47, 421-439, 2012 | 45 | 2012 |
| Niche analysis of orchids of serpentine and non-serpentine areas: implications for conservation V Djordjević, S Tsiftsis, D Lakušić, V Stevanović Plant Biosystems-An International Journal Dealing with all Aspects of Plant …, 2016 | 33 | 2016 |
| Identifying important areas for orchid conservation in Crete S Tsiftsis, I Tsiripidis, P Trigas European Journal of Environmental Sciences 1 (2), 2011 | 32 | 2011 |
| Pollination mechanisms are driving orchid distribution in space Z Štípková, S Tsiftsis, P Kindlmann Scientific Reports 10 (1), 850, 2020 | 28 | 2020 |
| Ecology of the orchid Goodyera repens in its southern distribution limits S Tsiftsis, I Tsiripidis, A Papaioannou Plant Biosystems-An International Journal Dealing with all Aspects of Plant …, 2012 | 25 | 2012 |
| Atlas of the Greek Orchids, Vol II Z Antonopoulos, S Tsiftsis Mediterraneo Editions, 2017 | 24 | 2017 |
| The genus Crocus (Iridaceae) in Greece: some noteworthy floristic records and karyotypes T Karamplianis, S Tsiftsis, T Constantinidis Phytologia Balcanica 19 (1), 53-66, 2013 | 24 | 2013 |
| Identifying areas of high importance for orchid conservation in east Macedonia (NE Greece) S Tsiftsis, I Tsiripidis, V Karagiannakidou Biodiversity and conservation 18, 1765-1780, 2009 | 24 | 2009 |
| Suitability of Habitats in Nepal for Dactylorhiza hatagirea Now and under Predicted Future Changes in Climate B Shrestha, S Tsiftsis, DJ Chapagain, C Khadka, P Bhattarai, ... Plants 10 (3), 467, 2021 | 23 | 2021 |
| Neottia cordata (Orchidaceae) at its southernmost distribution border in Europe: Threat status and effectiveness of Natura 2000 Network for its conservation S Tsiftsis, V Djordjević, I Tsiripidis Journal for nature conservation 48, 27-35, 2019 | 22 | 2019 |
| Patterns of orchid species richness and composition in relation to geological substrates V Djordjević, S Tsiftsis Wulfenia 26, 1-21, 2019 | 22 | 2019 |
| Patterns of distribution, abundance and composition of forest terrestrial orchids V Djordjević, S Tsiftsis, D Lakušić, S Jovanović, K Jakovljević, ... Biodiversity and Conservation 29, 4111-4134, 2020 | 21 | 2020 |
| The orchid flora of east Macedonia (NE Greece) S Tsiftsis, V Karagiannakidou, I Tsiripidis J. Eur. Orch 39 (3/4), 489-526, 2007 | 21 | 2007 |
