| Flowering plants of the Galápagos CK McMullen Cornell University Press, 1999 | 210 | 1999 |
| Invaders of pollination networks in the Galápagos Islands: emergence of novel communities A Traveset, R Heleno, S Chamorro, P Vargas, CK McMullen, ... Proceedings of the Royal Society B: Biological Sciences 280 (1758), 20123040, 2013 | 171 | 2013 |
| Breeding systems of selected Galapagos Islands angiosperms CK McMullen American Journal of Botany 74 (11), 1694-1705, 1987 | 161 | 1987 |
| Flower-visiting insects of the Galapagos islands. CK McMullen | 83 | 1993 |
| Pollination patterns and plant breeding systems in the Galápagos: a review S Chamorro, R Heleno, JM Olesen, CK McMullen, A Traveset Annals of Botany 110 (7), 1489-1501, 2012 | 68 | 2012 |
| Two new species of Miconia sect. Sagraea (Melastomataceae) from the Macaya Biosphere Reserve, Haiti, and twelve relevant new species combinations GM Ionta, WS Judd, JD Skean, CK McMullen Brittonia 64, 61-72, 2012 | 45 | 2012 |
| Pollination biology of a night-flowering Galápagos endemic, Ipomoea habeliana (Convolvulaceae) CK Mcmullen Botanical Journal of the Linnean Society 160 (1), 11-20, 2009 | 43 | 2009 |
| Reproductive biology of Galápagos Islands angiosperms CK McMullen Monogr Syst Bot 32, 35-45, 1990 | 41 | 1990 |
| Pollination of the heterostylous Galápagos native, Cordia lutea (Boraginaceae) CK McMullen Plant Systematics and Evolution 298, 569-579, 2012 | 39 | 2012 |
| Nocturnal and diurnal pollination of Clerodendrum molle (Verbenaceae) in the Galápagos Islands CK McMullen Plant Systematics and Evolution 292, 15-23, 2011 | 28 | 2011 |
| Megachile timberlakei Cockerell (Hymenoptera: Megachilidae): Yet another adventive bee species to the Galápagos Archipelago C Rasmussen, AL Carríon, R Castro-Urgal, S Chamorro, VH Gonzalez, ... The Pan-Pacific Entomologist 88 (1), 98-102, 2012 | 26 | 2012 |
| Pollination biology of the Galápagos endemic, Tournefortia rufo-sericea (Boraginaceae) CK McMULLEN Botanical Journal of the Linnean Society 153 (1), 21-31, 2007 | 24 | 2007 |
| 1996 P McMullen | 23 | 1994 |
| Origin and evolution of endemic Galápagos Varronia species (Cordiaceae) A Weeks, KE Baird, CK McMullen Molecular Phylogenetics and Evolution 57 (2), 948-954, 2010 | 22 | 2010 |
| Observations on insect visitors to flowering plants of Isla Santa Cruz–Part I. The endemic carpenter bee CK McMullen Noticias de Galápagos 42, 24-25, 1985 | 22 | 1985 |
| Wind pollination in the Galápagos Islands CK McMullen, DD Close Noticias de Galápagos 52 (1), 12-7, 1993 | 19 | 1993 |
| Green invaders of the Galapagos islands J Magee, CK McMullen, JK Reaser, E Spitzer, S Struve, C Tufts, A Tye, ... Science 294 (5545), 1279-1280, 2001 | 17 | 2001 |
| Pollinator availability: a possible explanation of inter-island floral variation in Justicia galapagana (Acanthaceae) CK McMullen | 16 | 2021 |
| The Galápagos carpenter bee, just how important is it CK McMullen Noticias de Galápagos 48, 16-18, 1989 | 16 | 1989 |
| Observations on insect visitors to flowering plants of Isla Santa Cruz. Part II. Butterflies, moths, ants, hover flies and stilt bugs CK McMullen Noticias de Galapagos 43, 21-23, 1986 | 12 | 1986 |
