| Growing knowledge: an overview of seed plant diversity in Brazil DC Zappi, FLR Filardi, P Leitman, VC Souza, BMT Walter, JR Pirani, ... Rodriguésia 66, 1085-1113, 2015 | 1085 | 2015 |
| Paraphyly of Tarasa (Malvaceae) and diverse origins of the polyploid species JA Tate, BB Simpson Systematic Botany 28 (4), 723-737, 2003 | 687 | 2003 |
| Economic botany: plants in our world BB Simpson, M Conner-Ogorzaly | 583 | 1986 |
| Floral rewards: alternatives to pollen and nectar BB Simpson, JL Neff Annals of the Missouri botanical Garden, 301-322, 1981 | 387 | 1981 |
| Evolution and diversity of floral rewards. BB Simpson, JL Neff | 352 | 1983 |
| Pleistocene changes in the flora of the high tropical Andes BB Simpson Paleobiology 1 (3), 273-294, 1975 | 334 | 1975 |
| Speciation patterns in the Amazonian forest biota BB Simpson, J Haffer Annual review of ecology and systematics 9, 497-518, 1978 | 254 | 1978 |
| The phylogenetic history and biogeography of the frankincense and myrrh family (Burseraceae) based on nuclear and chloroplast sequence data A Weeks, DC Daly, BB Simpson Molecular phylogenetics and evolution 35 (1), 85-101, 2005 | 248 | 2005 |
| A Revision of the Genus Polylepis (Rosaceae: Sanguisorbeae) BB Simpson Smithsonian Contributions to botany, 1979 | 246 | 1979 |
| Oil-collecting structures in the Anthophoridae (Hymenoptera): morphology, function, and use in systematics JL Neff, BB Simpson Journal of the Kansas Entomological Society, 95-123, 1981 | 244 | 1981 |
| Components of regulation of a population of dandelions in Michigan OT Solbrig, BB Simpson The Journal of Ecology, 473-486, 1974 | 235 | 1974 |
| Phylogenetic relationships and chromosome number evolution in Passiflora AK Hansen, LE Gilbert, BB Simpson, SR Downie, AC Cervi, RK Jansen Systematic Botany 31 (1), 138-150, 2006 | 202 | 2006 |
| Conflicting phylogenomic signals reveal a pattern of reticulate evolution in a recent high‐Andean diversification (Asteraceae: Astereae: Diplostephium) OM Vargas, EM Ortiz, BB Simpson New Phytologist 214 (4), 1736-1750, 2017 | 183 | 2017 |
| Mesquite, its biology in two desert shrub ecosystems. BB Simpson | 180 | 1977 |
| Quaternary biogeography of the high montane regions of South America BB Simpson The South American herpetofauna: its origin, evolution, and dispersal 157, 188, 1979 | 177 | 1979 |
| Phylogeny of Agavaceae based on ITS rDNA sequence variation DJ Bogler, BB Simpson American Journal of Botany 83 (9), 1225-1235, 1996 | 175 | 1996 |
| The phylogeny of Linum and Linaceae subfamily Linoideae, with implications for their systematics, biogeography, and evolution of heterostyly J McDill, M Repplinger, BB Simpson, JW Kadereit Systematic Botany 34 (2), 386-405, 2009 | 171 | 2009 |
| Bees, pollination systems and plant diversity. JL Neff, BB Simpson | 171 | 1993 |
| Breeding systems of dominant perennial plants of two disjunct warm desert ecosystems BB Simpson Oecologia 27, 203-226, 1977 | 137 | 1977 |
| Glacial migrations of plants: island biogeographical evidence BB Simpson Science 185 (4152), 698-700, 1974 | 131 | 1974 |
