| A classification for extant ferns AR Smith, KM Pryer, E Schuettpelz, P Korall, H Schneider, PG Wolf Taxon 55 (3), 705-731, 2006 | 1813 | 2006 |
| Horsetails and ferns are a monophyletic group and the closest living relatives to seed plants KM Pryer, H Schneider, AR Smith, R Cranfill, PG Wolf, JS Hunt, SD Sipes Nature 409 (6820), 618, 2001 | 692 | 2001 |
| Phylogeny and evolution of ferns (monilophytes) with a focus on the early leptosporangiate divergences KM Pryer, E Schuettpelz, PG Wolf, H Schneider, AR Smith, R Cranfill American journal of Botany 91 (10), 1582-1598, 2004 | 607 | 2004 |
| Phylogenetic relationships of extant ferns based on evidence from morphology and rbcL sequences KM Pryer, AR Smith, JE Skog American Fern Journal, 205-282, 1995 | 308 | 1995 |
| Thelypteridaceae AR Smith Pteridophytes and gymnosperms, 263-272, 1990 | 249 | 1990 |
| Fern classification AR Smith, KM Pryer, E Schuettpelz, P Korall, H Schneider, PG Wolf Biology and evolution of ferns and lycophytes. Cambridge University Press …, 2008 | 224 | 2008 |
| Unraveling the phylogeny of polygrammoid ferns (Polypodiaceae and Grammitidaceae): exploring aspects of the diversification of epiphytic plants H Schneider, AR Smith, R Cranfill, TJ Hildebrand, CH Haufler, TA Ranker Molecular phylogenetics and evolution 31 (3), 1041-1063, 2004 | 215 | 2004 |
| Phytogeographic relationships between neotropical and African-Madagascan pteridophytes RC Moran, AR Smith Brittonia 53 (2), 304-351, 2001 | 149 | 2001 |
| Comparison of fern and flowering plant distributions with some evolutionary interpretations for ferns AR Smith Biotropica, 4-9, 1972 | 146 | 1972 |
| Dryopteridaceae KU Kramer, RE Holttum, RC Moran, AR Smith Pteridophytes and gymnosperms, 101-144, 1990 | 138 | 1990 |
| Phylogeny and evolution of grammitid ferns (Grammitidaceae): a case of rampant morphological homoplasy TA Ranker, AR Smith, BS Parris, JMO Geiger, CH Haufler, SCK Straub, ... Taxon 53 (2), 415-415, 2004 | 136 | 2004 |
| Phylogenetic Relationships and Evolution of Extant Horsetails, Equisetum, Based on Chloroplast DNA Sequence Data (rbcL and trnL-F) DL Des Marais, AR Smith, DM Britton, KM Pryer International Journal of Plant Sciences 164 (5), 737-751, 2003 | 134 | 2003 |
| Intrafamilial relationships of the thelypteroid ferns (Thelypteridaceae) AR Smith, RB Cranfill American Fern Journal 92 (2), 131-150, 2002 | 127 | 2002 |
| New records of pteridophytes for the flora of Peru AR Smith, B León, H Tuomisto, H van der Werff, RC Moran, M Lehnert, ... SIDA, Contributions to Botany, 2321-2342, 2005 | 123 | 2005 |
| rbcL data reveal two monophyletic groups of filmy ferns (Filicopsida: Hymenophyllaceae) KM Pryer, AR Smith, JS Hunt, JY Dubuisson American Journal of Botany 88 (6), 1118-1130, 2001 | 118 | 2001 |
| Systematics of the neotropical species of Thelypteris section Cyclosorus AR Smith Calif., 1971 | 86 | 1971 |
| Serpocaulon (Polypodiaceae), a new genus segregated from Polypodium AR Smith, HP Kreier, CH Haufler, TA Ranker, H Schneider Taxon 55 (4), 919-930B, 2006 | 85 | 2006 |
| Is morphology really at odds with molecules in estimating fern phylogeny? H Schneider, AR Smith, KM Pryer Systematic Botany 34 (3), 455-475, 2009 | 81 | 2009 |
| Non-molecular phylogenetic hypotheses for ferns AR Smith American Fern Journal, 104-122, 1995 | 76 | 1995 |
| Chromosome counts for Mexican ferns AR Smith, JT Mickel Brittonia 29 (4), 391-398, 1977 | 76 | 1977 |
