| A comparative anatomical study of the genus Puschkinia Adams in Turkey K Yetişen, H Yıldırım, C Özdemir Acta Botanica Croatica 79 (1), 0-0, 2020 | | 2020 |
| A new bellflower, Campanula dersimensis (Campanulaceae), from E Anatolia, Turkey M Fırat, B Özüdoğru, H Yıldırım Willdenowia 52 (2), 167-177, 2022 | 3 | 2022 |
| A new bellflower, Campanula phitosiana sp. nov.(Campanulaceae) from Western Anatolia, Turkey H Yildirim, O ŞENTÜRK, T ÖZDÖL, AF Pirhan Phytotaxa 399 (1), 025-036, 2019 | 17 | 2019 |
| A new Crocus L.(Iridaceae) species from SE Turkey, based on morphological and molecular data O Erol, D Harpke, H Yıldırım Phytotaxa 239 (3), 223-232, 2015 | 21 | 2015 |
| A new distribution area of Asperula daphneola(Rubiaceae) in Western Turkey and it's new recommended IUCN threat category SG Senol, H Yildirim Biological Diversity and Conservation 3 (2), 123-127, 2010 | 14 | 2010 |
| A new distribution area of Scorzonera argyria Boiss.(Asteraceae) and contribution of it's morphological characters H Yildirim, SG Senol Biological Diversity and Conservation 3 (3), 6-9, 2010 | 1 | 2010 |
| A new record for the Flora of Turkey: Anchusa aegyptiaca (L) A H Yıldırım, Y Gemici DC.(Boraginaceae). Biological Diversity and Conservation 3 (2), 68-71, 2010 | | 2010 |
| A new record for the Flora of Turkey: Anchusa aegyptiaca(L) A. DC.(Boraginaceae) H Yildirim, Y Gemici Biological Diversity and Conservation 3 (2), 68-71, 2010 | 8 | 2010 |
| A new record for the Flora of Turkey: Geranium macrorrhizum L.(Geraniaceae) HH Oener, H Yildirim, AF Pirhan, Y Gemici Biological Diversity and Conservation 3 (2), 151-154, 2010 | 17 | 2010 |
| A new Rindera (Boraginaceae) species from Western Anatolia, Turkey H Yildirim Phytotaxa 427 (4), 249-258, 2019 | 9 | 2019 |
| A new species of Centaurea L. subgen. Cyanus Mill.(Asteraceae) from Turkey E Şirin, H Yildirim, T Uysal, K Ertuğrul Botanica Serbica 45 (1), 13-22, 2021 | 4 | 2021 |
| A new suggestion IUCN threat category for Campanula peshmenii Güner (Campanulaceae) H YILDIRIM, T ÖZDÖL Acta Biologica Turcica 32 (3), 168-173, 2019 | 7 | 2019 |
| A new taxon for Jurinea from West Turkey H Yıldırım, S Şenol Ot Sistematik Botanik 17 (1), 1-8, 2010 | 4 | 2010 |
| A New Variety of Campanula myrtifolia (Campanulaceae) from South Anatolia, Turkiye T Özdöl, Y ALTIOĞLU, İG Deniz, H YILDIRIM Herbarium Turcicum, 37-43, 0 | 5* | |
| A study on endogenous hormone levels and phenolic profiles in embryogenic and non-embryogenic calli of endemic plant Campanula tomentosa L MI Coşkun, M Gemici, H Yildirim Asian Journal of Biology 4 (2), 1-7, 2017 | 1 | 2017 |
| Acantholimon riyatguelii (Plumbaginaceae), a threatened new unarmed species from Central Anatolia, Turkey H Yildirim, MB Crespo Phytotaxa 175 (2), 073-084, 2014 | 10 | 2014 |
| Alkanna malatyana (Boraginaceae), a new species from East Anatolia, Turkey H Yildirim, SG ŞENOL Phytotaxa 164 (2), 124-132, 2014 | 15 | 2014 |
| Allium ayhan-toprakii (Amaryllidaceae), a new species from Turkey T Özdöl, S Erdem, H Yıldırım Annales Botanici Fennici 59 (1), 233-237, 2022 | 7 | 2022 |
| Allium mardinense (Amaryllidaceae), a new species from southeastern Turkey MM Balos, H Akan, H Yıldırım, M Geçit Annales Botanici Fennici 58 (4-6), 341-346, 2021 | 12 | 2021 |
| Allium sultanae-ismailii (Amaryllidaceae), a new species from eastern Turkey H Yildirim Phytotaxa 403 (1), 39–46-39–46, 2019 | 18 | 2019 |
