| Micro-morphology of Selaginella megaspores from India SK Singh, BB Yadav, M Srivastava, PK Shukla, GK Srivastava Grana 53 (3), 197-220; doi:10.1080100173134.2014, 2014 | 20 | 2014 |
| Selaginella crassipes (Selaginellaceae), a new report from India SK Singh, GK Srivastava, M Srivastava, PK Shukla Taiwania 57 (3), 283-287, 2012 | 12 | 2012 |
| Isoetes ×gopalkrishnae (Isoetaceae), a new interspecific sterile hybrid from central India SK Singh, SS Kumar, NK Dubey, PK Shukla Phytotaxa 362 (1), 68-76, 2018 | 11 | 2018 |
| The microspore morphology of some species of Selaginella (Selaginellaceae) from India SK Singh, NK Dubey, GK Srivastava Palynology, 2016 | 10 | 2016 |
| Comparative morphological studies on spikes of Indian Selaginella Beauv SK Singh, BB Yadav, M Srivastava, PK Shukla, GK Srivastava Plant Systematics and Evolution 300 (5), 1235-1245, 2014 | 10 | 2014 |
| Comparative morphology of ligules of three Indian species of Selaginella SK Singh, GK Srivastava, PK Shukla American Fern Journal, 71-79, 2010 | 9 | 2010 |
| Cyto-morphology based basal and sub-basal level evolutionary relationship among Isoetes L. species with special reference to Indian taxa PK Shukla, GK Srivastava, SK Shukla, SK Singh PROCEEDINGS-NATIONAL ACADEMY OF SCIENCES INDIA SECTION B 77 (1), 88, 2007 | 8 | 2007 |
| The taxonomy and conservation status of Isoetes (Isoetaceae; Lycopodiopsida) in India SK Singh, PK Shukla, DF Brunton, NK Dubey, SK Shukla Botany Letters, https://doi.org/10.1080/23818107.2020.18, 2020 | 7 | 2020 |
| Morphological studies of the ligules of selected Indian species of Selaginella (Selaginellaceae) SK Singh, SK Shukla, NK Dubey, PK Shukla, RV Lansdown Flora, 2019 | 7 | 2019 |
| Selaginella odishana (Selaginellaceae: Lycopodiophyta), a new species from Odisha, Eastern Ghats of India SK Singh, PK Shukla, NK Dubey Kew Bulletin, 10.1007/S12225-020-09897-1, 2020 | 6* | 2020 |
| A new subspecies of Isoetes coromandelina (Isoetaceae) from Gujarat, India SK Shukla, SK Singh, PK Shukla, NK Dubey, H Khanam, GK Srivastava Taiwania 62 (2), 121‒128, 2017 | 6 | 2017 |
| Genetic Diversity and Population Structure of Indian Isoëtes dixitei Shende Based on Amplified Fragment Length Polymorphisms and Intron Sequences of LEAFY J Jung, SK Singh, HC Pande, GK Srivastava, HK Choi Aquatic Botany 113, 1-7, 2014 | 6 | 2014 |
| Hydrochemical Characterization of Some Stands of Isoetes dixitei in India BB Yadav, SK Singh, NK Dubey, SK Shukla, GK Srivastava Taiwania 60 (2), 63-70, 2015 | 5 | 2015 |
| Comparative studies on the six populations of I. panchghaneinsis form India BB Yadav, SK Singh, M Srivastava, GK Srivastava Turkish Journal of Botany 36 (6), 667-676, 2012 | 5* | 2012 |
| The significance of a new umbellate ornamentation in Isoetes (Isoetaceae: Lycopodiopsida) megaspores SK Singh, PK Shukla, NK Dubey, SK Shukla Grana, 10.1080/00173134.2020.1825794, 2020 | 3 | 2020 |
| Arbuscular mycorrhizal colonization in Isoetes (Quillworts, Lycopodiopsida) from India SK Singh, SK Shukla, NK Dubey, PK Shukla, GK Srivastava Indian Fern Journal 35, 139-162, 2018 | 2 | 2018 |
| Isoetes bilaspurensis (Isoetaceae – Lycopodiopsida), New to Southern India: An Extended Distribution and Redescription PK Shukla, SK Singh, DF Brunton, SK Shukla, AP Patil, NK Dubey American Fern Journal 114 (2), 127-139, 2024 | | 2024 |
| Mycorrhizal Association in Pteridophytic Flora of Pachmarhi Hills of Central India: Occurrence, Ecological and Evolutionary Significance SK Shukla, SK Singh, PK Shukla, NK Dubey, GK Srivastava New Vistas in Indian Flora, 2020 | | 2020 |
| Revisionary studies on the morphology of some organs of the genus Selaginella P. Beauvois 1805 in India and allied genera SK Singh University of Allahabad, 2012 | | 2012 |
