| # | Title | Journal | Year | Citations |
|---|
| 1 | EVOLUTION AND MEASUREMENT OF SPECIES DIVERSITY | Taxon | 1972 | 3,991 |
| 2 | Bergey's Manual of Determinative Bacteriology | Taxon | 1975 | 2,448 |
| 3 | THE COMPARISON OF DENDROGRAMS BY OBJECTIVE METHODS | Taxon | 1962 | 1,296 |
| 4 | A classification for extant ferns | Taxon | 2006 | 1,142 |
| 5 | TOWARD A RATIONAL CLASSIFICATION OF CULTIVATED PLANTS | Taxon | 1971 | 1,046 |
| 6 | Alien plants in checklists and floras: towards better communication between taxonomists and ecologists | Taxon | 2004 | 978 |
| 7 | Mammal Species of the World: A Taxonomic and Geographic Reference | Taxon | 1993 | 874 |
| 8 | A new subfamily classification of the Leguminosae based on a taxonomically comprehensive phylogeny: The Legume Phylogeny Working Group (LPWG) | Taxon | 2017 | 803 |
| 9 | An Integrated System of Classification of Flowering Plants | Taxon | 1995 | 771 |
| 10 | Manual of Vascular Plants of Northeastern United States and Adjacent Canada | Taxon | 1992 | 762 |
| 11 | Silica gel: An ideal material for field preservation of leaf samples for DNA studies | Taxon | 1991 | 760 |
| 12 | ECOLOGICAL SPECIES, MULTISPECIES, AND OAKS | Taxon | 1976 | 672 |
| 13 | MINORITY CYTOTYPE EXCLUSION IN LOCAL PLANT POPULATIONS | Taxon | 1975 | 585 |
| 14 | A NEW METHOD FOR ESTIMATING KARYOTYPE ASYMMETRY | Taxon | 1986 | 573 |
| 15 | Compendium of Soil Fungi | Taxon | 1982 | 561 |
| 16 | Combining trees as a way of combining data sets for phylogenetic inference, and the desirability of combining gene trees | Taxon | 1992 | 507 |
| 17 | PRESERVATION OF PLANT SAMPLES FOR DNA RESTRICTION ENDONUCLEASE ANALYSIS | Taxon | 1987 | 490 |
| 18 | History and concepts of big plant genera | Taxon | 2004 | 487 |
| 19 | A proposal for a standardised protocol to barcode all land plants | Taxon | 2007 | 457 |
| 20 | Why are there so many plant species in the Neotropics? | Taxon | 2011 | 438 |
| 21 | Fern phylogeny inferred from 400 leptosporangiate species and three plastid genes | Taxon | 2007 | 393 |
| 22 | A GENERAL SYSTEM FOR CODING TAXONOMIC DESCRIPTIONS | Taxon | 1980 | 389 |
| 23 | Phylogeny and classification of Pinus | Taxon | 2005 | 383 |
| 24 | The Study of Plant Structure: Principles and Selected Methods | Taxon | 1982 | 380 |
| 25 | REPRODUCTIVE BIOLOGY IN RELATION TO SYSTEMATICS | Taxon | 1969 | 367 |
| 26 | A molecular phylogeny of the Solanaceae | Taxon | 2008 | 349 |
| 27 | A generic and tribal synopsis of the Brassicaceae (Cruciferae) | Taxon | 2012 | 315 |
| 28 | A PRACTICAL AND NATURAL TAXONOMY FOR CANNABIS | Taxon | 1976 | 309 |
| 29 | Legume phylogeny and classification in the 21st century: Progress, prospects and lessons for other species–rich clades | Taxon | 2013 | 305 |
| 30 | What we still don't know about polyploidy | Taxon | 2010 | 300 |
| 31 | Chloroplast DNA and biosystematics: The effects of intraspecific diversity and plastid transmission | Taxon | 1991 | 286 |
| 32 | Extending Gower's general coefficient of similarity to ordinal characters | Taxon | 1999 | 285 |
| 33 | THE PRINCIPLES AND PRACTICE OF NUMERICAL TAXONOMY | Taxon | 1963 | 283 |
| 34 | (1557) Proposal to conserve the name Cryptococcus gattii against C. hondurianus and C. bacillisporus (Basidiomycota, Hymenomycetes, Tremellomycetidae ) | Taxon | 2002 | 281 |
| 35 | TWO HUNDRED YEARS GENECOLOGY | Taxon | 1971 | 279 |
| 36 | Vicariance and dispersal in the alpine perennial Bupleurum stellatum L. (Apiaceae) | Taxon | 2005 | 277 |
| 37 | PRINCIPAL COMPONENT ANALYSIS OF TAXONOMIC DATA WITH MULTI‐STATE DISCRETE CHARACTERS | Taxon | 1976 | 274 |
| 38 | Flora of the Pacific Northwest | Taxon | 1974 | 272 |
| 39 | Patterns of endemism and comparative phylogeography confirm palaeo-environmental evidence for Pleistocene refugia in the Eastern Alps | Taxon | 2003 | 265 |
| 40 | How many species of seed plants are there? | Taxon | 2001 | 264 |
| 41 | Illustrierte Flora von Mittel-Europa | Taxon | 1975 | 260 |
| 42 | Flora of Barro Colorado Island | Taxon | 1979 | 257 |
| 43 | Flowering Plants. Evolution above the Species Level | Taxon | 1975 | 242 |
| 44 | Ecology of plant speciation | Taxon | 2010 | 241 |
| 45 | An ITS phylogeny of tribe Senecioneae (Asteraceae) and a new delimitation of Senecio L. | Taxon | 2007 | 237 |
| 46 | Are many plant species paraphyletic? | Taxon | 1994 | 228 |
| 47 | Southern European glacial refugia: A tale of tales | Taxon | 2011 | 228 |
| 48 | Flora of Tropical East Africa | Taxon | 1971 | 215 |
| 49 | INSECT REPRODUCTION AND FLORAL FRAGRANCES: KEYS TO THE EVOLUTION OF THE ANGIOSPERMS? | Taxon | 1986 | 215 |
| 50 | A synopsis of Ipomoea (Convolvulaceae) in the Americas | Taxon | 1996 | 213 |
