| The vascular flora of Isla Socorro, Mexico GA Levin, R Moran Memoir (USA), 1989 | 91 | 1989 |
| Systematic foliar morphology of Phyllanthoideae (Euphorbiaceae). I. Conspectus GA Levin Annals of the Missouri Botanical Garden, 29-85, 1986 | 82 | 1986 |
| Relationships within the spiny-fruited umbellifers (Scandiceae subtribes Daucinae and Torilidinae) as assessed by phylogenetic analysis of morphological characters BY Lee, GA Levin, SR Downie Systematic Botany, 622-642, 2001 | 53 | 2001 |
| Systematic foliar morphology of Phyllanthoideae (Euphorbiaceae). III. Cladistic analysis GA Levin Systematic Botany, 515-530, 1986 | 41 | 1986 |
| Revision and phylogeny of Acalypha (Euphorbiaceae) in Malesia VG Sagun, GA Levin, PC Van Welzen Blumea-Biodiversity, Evolution and Biogeography of Plants 55 (1), 21-60, 2010 | 40 | 2010 |
| Phylogenetic implications of pollen ultrastructure in the Oldfieldioideae (Euphorbiaceae) GA Levin, MG Simpson Annals of the Missouri Botanical Garden, 203-238, 1994 | 38 | 1994 |
| Pollen ultrastructure of the biovulate Euphorbiaceae MG Simpson, GA Levin International Journal of Plant Sciences 155 (3), 313-341, 1994 | 30 | 1994 |
| Feral sheep on Socorro Island: facilitators of alien plant colonization and ecosystem decay HS Walter, GA Levin Diversity and Distributions 14 (2), 422-431, 2008 | 29 | 2008 |
| Vegetation and flora of the sand deposits of the Mississippi River valley in northwestern Illinois JE Ebinger, LR Phillippe, RW Nyboer, WE McClain, DT Busemeyer, ... Illinois Natural History Survey Bulletin; v. 037, no. 06, 2006 | 23 | 2006 |
| Pollen morphology and ultrastructure of Acalypha (Euphorbiaceae) VG Sagun, GA Levin, RWJM van der Ham Review of Palaeobotany and Palynology 140 (1-2), 123-143, 2006 | 21 | 2006 |
| Evolution in the Acalypha gracilens/monococca complex (Euphorbiaceae): morphological analysis GA Levin Systematic Botany, 269-287, 1998 | 20 | 1998 |
| Flora of Singapore: checklist and bibliography. S Lindsay, BC Ho, KY Chong, IM Turner, A Ibrahim, M Alonso-García, ... [" Gardens' Bulletin Singapore"] 74 (S1), 2022 | 18 | 2022 |
| Delineation of natural communities, a checklist of vascular plants, and new locations for rare plants at the Savanna Army Depot, Carroll and Jo Daviess Counties, Illinois K Robertson, LR Phillippe, GA Levin, M Moore Illinois Natural History Survey Technical Reports, 1997 | 18 | 1997 |
| Floral morphology, nectar production, and breeding systems in Dudleya subgenus Dudleya (Crassulaceae). GA Levin, TW Mulroy | 16 | 1985 |
| Flora of the Venezuelan Guayana G Webster, P Berry, W Scott, H Esser, L Gillespie, W Hayden, G Levin, ... Missouri Botanical Garden Press: Missouri 117, 1999 | 15 | 1999 |
| Acalypha GA Levin Nuevo catálogo de la Flora Vascular de Venezuela. Fundación Instituto …, 2008 | 14 | 2008 |
| Phylogeny and biogeography of Acalypha (Euphorbiaceae) GA Levin, VW Steinmann, VG Sagun XVII International Botanical Congress 68, 2005 | 14 | 2005 |
| Euphorbiaceae PE Berry, MBR Caruzo, I Cordeiro, HJ Esser, FJ Fernández-Casas, ... Nuevo catálogo de la flora vascular de Venezuela, 366-380, 2008 | 12 | 2008 |
| Phylogenetic relationships of Didymocistus and Hymenocardia (Euphorbiaceae) GA Levin, MG Simpson Annals of the Missouri Botanical Garden, 239-244, 1994 | 12 | 1994 |
| Systematic foliar morphology of Phyllanthoideae (Euphorbiaceae). II. Phenetic analysis GA Levin Annals of the Missouri Botanical Garden, 86-98, 1986 | 12 | 1986 |
