| Trichome micromorphology and its systematic significance in Asian Leucas (Lamiaceae) SMS Purayidathkandy Flora 242 (2018), 70-78, 2018 | 33 | 2018 |
| Fatty acid profiling and multivariate analysis in the genus Leucas reveals its nutritional, pharmaceutical and chemotaxonomic significance AK Choudhary, P Sunojkumar, G Mishra Phytochemistry 143, 72-80, 2017 | 20 | 2017 |
| Leucas beddomei (Hook. f.) Sunojkumar & P. Mathew (Lamiaceae), a new status and name for Leucas hirta var. beddomei Hook. f.-a little known endemic from India P Sunojkumar, P Mathew RHEEDEA-KERALA- 12 (2), 169-174, 2002 | 9 | 2002 |
| Preliminary phytochemical screening of 6 members of Leucas (Lamiaceae) K Geethika, P Sunojkumar Int J Pharm Sci Rev Res 47, 60-4, 2017 | 8 | 2017 |
| Isodon villosus (Nepetoideae, Lamiaceae), a new species from Guangxi, China SHP Ya-Ping Chen, Chun-Lei Xiang1 Phytotaxa 268 (4), 271-278, 2016 | 8 | 2016 |
| First record of Lindernia dubia (Linderniaceae) in India and reduction of Lindernia nelliyampathiensis as one of its synonyms MG Prasad, P Sunojkuma Phytotaxa 184 (3), 165-169, 2014 | 8 | 2014 |
| A new species of Lindernia (Linderniaceae) from India MG Prasad, P Sunojkumar Phytotaxa 162 (1), 57-60, 2014 | 8 | 2014 |
| Leucas sebaldiana Sunojk.(Lamiaceae) a new species from India P Sunojkumar Candollea 60 (1), 233, 2005 | 7 | 2005 |
| Re-establishment of Plectranthus bishopianus (Lamiaceae) based on morphological and micromorphological data K Smitha, A Paton, P Sunojkumar Plant systematics and evolution 304, 807-816, 2018 | 6 | 2018 |
| Phytochemical screening and high-performance thin-layer chromatography fingerprint profile of three species of Leucas (Lamiaceae) K Geethika, P Sunojkumar Ancient Science of Life 37 (2), 102-107, 2017 | 6 | 2017 |
| Plectranthus anamudianus (Lamiaceae): a new species from Western Ghats, India SP K SMITHA Phytotaxa, 2016 284 (1), 051–060, 2016 | 6 | 2016 |
| A checklist of the genus Pogostemon desf. in Southern Western Ghats K Shinoj, KP Vimal, P Sunojkumar S Indian J Biol Sci 2, 46, 2016 | 6 | 2016 |
| A new species of Striga section Polypleurae (Orobanchaceae) from southern Western Ghats of India KMP KUMAR, M OMALSREE, M Sabu, P Sunojkumar, B Thomas, ... Phytotaxa 212 (2), 163–168-163–168, 2015 | 6 | 2015 |
| Re‐establishment of the overlooked species Torenia godefroyi (Linderniaceae), and notes on the identity of T. lindernioides MG Prasad, RK Roy, P Sunojkumar Nordic Journal of Botany 35 (1), 45-47, 2017 | 5 | 2017 |
| Notes on the Identity and distribution of Plectranthus subincisus (Lamiaceae)—a poorly known species recollected after 150 years in southern India K Smitha, P Sunojkumar Phytotaxa 192 (2), 105-111, 2015 | 5 | 2015 |
| First record of Vandellia diffusa (Linderniaceae) in Asia MG Prasad, KP Vimal, K Shinoj, P Sunojkumar Phytotaxa 163 (1), 54–57-54–57, 2014 | 5 | 2014 |
| Insect diversity and pollination biology of Leucas chinensis (Lamiaceae) P Erancheri, SP Kumar Annals of Plant Sciences 2 (07), 230-233, 2013 | 5 | 2013 |
| Leucas sivadasaniana, a new species of Lamiaceae (Leucas sect. Astrodon) from Peninsular India P Sunojkumar Novon: A Journal for Botanical Nomenclature 18 (2), 247-250, 2008 | 5 | 2008 |
| Plastome sequences fail to resolve shallow level relationships within the rapidly radiated genus Isodon (Lamiaceae) YP Chen, F Zhao, AJ Paton, P Sunojkumar, LM Gao, CL Xiang Frontiers in Plant Science 13, 985488, 2022 | 4 | 2022 |
| Pollination Biology of medicinally important plant Leucas aspera ER Prasad, P Sunojkumar J Entomol Zool Stud 2, 341-344, 2014 | 4 | 2014 |
