| Growing knowledge: an overview of seed plant diversity in Brazil BFG-The Brazil Flora Group, DC Zappi, FLR Filardi, P Leitman, VC Souza, ... Rodriguésia 66 (4), 1085-1113, 2015 | 1124 | 2015 |
| Paraphyly of Tarasa (Malvaceae) and diverse origins of the polyploid species JA Tate, BB Simpson Systematic Botany 28 (4), 723-737, 2003 | 721 | 2003 |
| Economic botany: plants in our world BB Simpson, M Conner-Ogorzaly | 597 | 1986 |
| Floral rewards: alternatives to pollen and nectar BB Simpson, JL Neff Annals of the Missouri botanical Garden, 301-322, 1981 | 401 | 1981 |
| Evolution and diversity of floral rewards. BB Simpson, JL Neff | 362 | 1983 |
| Pleistocene changes in the flora of the high tropical Andes BB Simpson Paleobiology 1 (3), 273-294, 1975 | 332 | 1975 |
| 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 | 257 | 2005 |
| 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 | 251 | 1981 |
| Speciation patterns in the Amazonian forest biota BB Simpson, J Haffer Annual review of ecology and systematics 9, 497-518, 1978 | 251 | 1978 |
| A Revision of the Genus Polylepis (Rosaceae: Sanguisorbeae) BB Simpson Smithsonian Contributions to botany, 1979 | 249 | 1979 |
| Components of regulation of a population of dandelions in Michigan OT Solbrig, BB Simpson The Journal of Ecology, 473-486, 1974 | 235 | 1974 |
| 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 | 209 | 2017 |
| 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 |
| Mesquite, its biology in two desert shrub ecosystems. BB Simpson | 183 | 1977 |
| 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 | 181 | 2009 |
| Quaternary biogeography of the high montane regions of South America BB Simpson The South American herpetofauna: its origin, evolution, and dispersal 157, 188, 1979 | 179 | 1979 |
| Phylogeny of Agavaceae based on ITS rDNA sequence variation DJ Bogler, BB Simpson American Journal of Botany 83 (9), 1225-1235, 1996 | 178 | 1996 |
| Bees, pollination systems and plant diversity. JL Neff, BB Simpson | 172 | 1993 |
| Incongruence between gene trees and species trees and phylogenetic signal variation in plastid genes DJP Goncalves, BB Simpson, EM Ortiz, GH Shimizu, RK Jansen Molecular phylogenetics and evolution 138, 219-232, 2019 | 141 | 2019 |
| Breeding systems of dominant perennial plants of two disjunct warm desert ecosystems BB Simpson Oecologia 27, 203-226, 1977 | 140 | 1977 |
