| GrassBase-the online world grass flora WD Clayton, MS Vorontsova, KT Harman, H Williamson | 716* | 2006 |
| Towards Target 1 of the Global Strategy for Plant Conservation: a working list of all known plant species—progress and prospects AJ Paton, N Brummitt, R Govaerts, K Harman, S Hinchcliffe, B Allkin, ... Taxon 57 (2), 602-611, 2008 | 228 | 2008 |
| Alpha e-taxonomy: responses from the systematics community to the biodiversity crisis SJ Mayo, R Allkin, W Baker, V Blagoderov, I Brake, B Clark, R Govaerts, ... Kew Bulletin 63, 1-16, 2008 | 82 | 2008 |
| World checklist of Poaceae WD Clayton, R Govaerts, KT Harman, H Williamson, M Vorontsova Richmond, UK: Royal Botanic Gardens, Kew, 2013 | 71 | 2013 |
| Scratchpads: a data-publishing framework to build, share and manage information on the diversity of life VS Smith, SD Rycroft, KT Harman, B Scott, D Roberts BMC bioinformatics 10, 1-16, 2009 | 57 | 2009 |
| GrassWorld BK Simon, WD Clayton, KT Harman, M Vorontsova, I Brake, D Healy, ... Published at http://grassworld. myspecies. info/[accessed 10 Nov 2014], 2011 | 42 | 2011 |
| GrassBase—The online World grass flora: The Board of Trustees, Royal Botanic Gardens WD Clayton, MS Vorontsova, KT Harman, H Williamson | 35 | 2016 |
| GrassBase-The Online World Grass Flora. 2006 WD Clayton, MS Vorontsova, KT Harman, H Williamson Online: http://www. kew. org/data/grasses-db. html (29 September 2008), 2015 | 33 | 2015 |
| World grass species: synonymy WD Clayton, MS Vorontsova, KT Harman, H Williamson Microsoft Access database, 2002 | 31 | 2002 |
| World grass species-Synonymy database WD Clayton, KT Harman, H Williamson The Board of Trustees of the Royal Botanic Gardens, Kew, 2006 | 28 | 2006 |
| World checklist of Poaceae. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet WD Clayton, R Govaerts, KT Harman, H Williamson, M Vorontsova 2014–08–15]. http://apps. kew. org/wcsp/Retrieved, 2011 | 27 | 2011 |
| World Checklist of Poaceae. Facilitated by the Royal Botanic Gardens, Kew WD Clayton, R Govaerts, KT Harman, H Williamson, M Vorontsova Published on the Internet, 2017 | 20 | 2017 |
| Grass base WD Clayton, MS Vorontsova, KT Harman, H Williamson The Online World Grass Flora, 2006 | 14 | 2006 |
| The genetic diversity of Scaevola plumieri (Goodeniaceae), an indigenous dune coloniser, as revealed by Inter Simple Sequence Repeat (ISSR) fingerprinting NP Barker, KT Harman, BS Ripley, J Bond South African journal of botany 68 (4), 532-541, 2002 | 12 | 2002 |
| A working list of all known plant species–progress and prospects towards Target 1 of the Global Strategy for Plant Conservation AJ Paton, NA Brummitt, R Govaerts, K Harman, S Hinchcliffe, R Allkin, ... Taxon 57 (2), 602-611, 2008 | 11* | 2008 |
| GrassBase-The Online World Grass Flora. Royal Botanic Gardens. Kew, UK WD Clayton, MS Vorontsova, KT Harman, H Williamson | 9 | 2006 |
| H. WILLIAMSON 2006. GrassBase-The Online World Grass Flora WD Clayton, KT Harman | 9 | |
| onwards. WD Clayton, KT Harman, H Williamson GrassBase—The Online World Grass Flora., 2006 | 7 | 2006 |
| Grass Base—The online world grass flora. Kew Royal Botanic Gardens W Clayton, K Harman, H Williamson | 6 | 2006 |
| H. Williamson 2006 onwards WD Clayton, MS Vorontsova, KT Harman GrassBase-The Online World Grass Flora, 0 | 6 | |
Vincent SmithNatural History Museum, LondonVerified email at vsmith.info
Vincent SmithNatural History Museum, LondonVerified email at vsmith.info