| Plant systematics MG Simpson Academic press, 2019 | 1957 | 2019 |
| Familial classification of the Boraginales F Luebert, L Cecchi, MW Frohlich, M Gottschling, CM Guilliams, ... Taxon 65 (3), 502-522, 2016 | 201 | 2016 |
| The borage family (Boraginaceae s. str.): A revised infrafamilial classification based on new phylogenetic evidence, with emphasis on the placement of some enigmatic genera J Chacón, F Luebert, HH Hilger, S Ovchinnikova, F Selvi, L Cecchi, ... Taxon 65 (3), 523-546, 2016 | 173 | 2016 |
| Diversity and classification of flowering plants MG Simpson Plant systematics, 181-274, 2010 | 154 | 2010 |
| Phylogeny and classification of the Haemodoraceae MG Simpson Annals of the Missouri Botanical Garden, 722-784, 1990 | 99 | 1990 |
| Geneious! Simplified genome skimming methods for phylogenetic systematic studies: A case study in Oreocarya (Boraginaceae) LA Ripma, MG Simpson, K Hasenstab‐Lehman Applications in Plant Sciences 2 (12), 1400062, 2014 | 95 | 2014 |
| Phylogenetic relationships in the Commelinaceae: I. A cladistic analysis of morphological data TM Evans, RB Faden, MG Simpson, KJ Sytsma Systematic Botany 25 (4), 668-691, 2000 | 86 | 2000 |
| Pollen ultrastructure of the Haemodoraceae and its taxonomic significance MG Simpson Grana 22 (2), 79-103, 1983 | 78 | 1983 |
| Cat's eyes and popcorn flowers: Phylogenetic systematics of the genus Cryptantha sl (Boraginaceae) KE Hasenstab-Lehman, MG Simpson Systematic Botany 37 (3), 738-757, 2012 | 76 | 2012 |
| American amphitropical disjuncts: Perspectives from vascular plant analyses and prospects for future research MG Simpson, LA Johnson, T Villaverde, CM Guilliams American Journal of Botany 104 (11), 1600-1650, 2017 | 62 | 2017 |
| Checklist of the vascular plants of San Diego County JP Rebman, MG Simpson San Diego Natural History Museum, 2006 | 53 | 2006 |
| Pollen ultrastructure of the Pontederiaceae: evidence for exine homology with the Haemodoraceae MG Simpson Grana 26 (2), 113-126, 1987 | 47 | 1987 |
| Phylogeny of the popcorn flowers: Use of genome skimming to evaluate monophyly and interrelationships in subtribe Amsinckiinae (Boraginaceae) MG Simpson, CM Guilliams, KE Hasenstab-Lehman, ME Mabry, L Ripma Taxon 66 (6), 1406-1420, 2017 | 43 | 2017 |
| Reversal in ovary position from inferior to superior in the Haemodoraceae: evidence from floral ontogeny MG Simpson International Journal of Plant Sciences 159 (3), 466-479, 1998 | 43 | 1998 |
| Septal nectary anatomy and phylogeny of the Haemodoraceae MG Simpson Systematic Botany, 593-613, 1993 | 43 | 1993 |
| Phylogenetic implications of pollen ultrastructure in the Oldfieldioideae (Euphorbiaceae) GA Levin, MG Simpson Annals of the Missouri Botanical Garden, 203-238, 1994 | 39 | 1994 |
| Ultrastructure of Heterocolpate Pollen in Cryptantha (Boraginaceae) L Hargrove, MG Simpson International Journal of Plant Sciences 164 (1), 137-151, 2003 | 35 | 2003 |
| Pollen ultrastructure of the Tecophilaeaceae MG Simpson Grana 24 (2), 77-92, 1985 | 35 | 1985 |
| Pollen ultrastructure of the biovulate Euphorbiaceae MG Simpson, GA Levin International Journal of Plant Sciences 155 (3), 313-341, 1994 | 33 | 1994 |
| Memoirs of a frequent flier: Phylogenomics reveals 18 long‐distance dispersals between North America and South America in the popcorn flowers (Amsinckiinae) CM Guilliams, KE Hasenstab‐Lehman, ME Mabry, MG Simpson American Journal of Botany 104 (11), 1717-1728, 2017 | 30 | 2017 |
