World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
72
Citations
30174
World Ranking
609
National Ranking
181

Kenneth J. Sytsma publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Kenneth J. Sytsma sits on this spectrum.

36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36 publications 467+

This scientist: 155 publications — 60th percentile

60% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

Kenneth J. Sytsma D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Kenneth J. Sytsma sits on this spectrum.

30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 72 D-Index — 91st percentile

91% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

Overview

What is he best known for?

The fields of study he is best known for:

  • Botany
  • Genus
  • Ecology

His main research concerns Botany, Ecology, Phylogenetic tree, Evolutionary biology and Phylogenetics. The concepts of his Botany study are interwoven with issues in Clade, Monophyly and Molecular phylogenetics. His Monophyly research is multidisciplinary, incorporating perspectives in Cleomaceae and NdhF.

The various areas that Kenneth J. Sytsma examines in his Ecology study include Biological dispersal, Vicariance and Bromelioideae. His work on Chloroplast DNA and Molecular evolution as part of general Phylogenetic tree research is often related to Combinatorics, thus linking different fields of science. His Evolutionary biology study combines topics from a wide range of disciplines, such as Onagraceae, Saxifragales, Austrobaileyales, Nymphaeales and Amborellaceae.

His most cited work include:

  • Angiosperm phylogeny: 17 genes, 640 taxa (499 citations)
  • Molecular evolution and adaptive radiation (389 citations)
  • Angiosperm Phylogeny Inferred from 18S Ribosomal DNA Sequences (367 citations)

What are the main themes of his work throughout his whole career to date?

Kenneth J. Sytsma mostly deals with Botany, Phylogenetic tree, Evolutionary biology, Monophyly and Phylogenetics. His Botany research includes themes of Chloroplast DNA and NdhF. The Phylogenetic tree study combines topics in areas such as Zoology, Ecology and Nuclear gene.

His Ecology research includes elements of Biological dispersal, Lineage and Vicariance. As a part of the same scientific study, Kenneth J. Sytsma usually deals with the Evolutionary biology, concentrating on Molecular phylogenetics and frequently concerns with Systematics. In his work, Rosidae is strongly intertwined with Sister group, which is a subfield of Monophyly.

He most often published in these fields:

  • Botany (42.31%)
  • Phylogenetic tree (33.85%)
  • Evolutionary biology (30.00%)

What were the highlights of his more recent work (between 2013-2021)?

  • Ecology (25.38%)
  • Phylogenetic tree (33.85%)
  • Clade (18.46%)

In recent papers he was focusing on the following fields of study:

His primary scientific interests are in Ecology, Phylogenetic tree, Clade, Evolutionary biology and Phylogenetics. His work is dedicated to discovering how Ecology, Biological dispersal are connected with Crown group, Capparaceae, Brassicaceae and Vicariance and other disciplines. His Phylogenetic tree study integrates concerns from other disciplines, such as Lamiaceae, Salvia, Botany, Niche differentiation and Plant community.

His Botany research is multidisciplinary, incorporating elements of Zoology and Chloroplast capture. His studies deal with areas such as Polemoniaceae, NdhF, Genome and Vochysiaceae as well as Evolutionary biology. His Phylogenetics study combines topics in areas such as Pollination, Pollinator and Morphometrics.

Between 2013 and 2021, his most popular works were:

  • Adaptive radiation, correlated and contingent evolution, and net species diversification in Bromeliaceae (201 citations)
  • Divergence times, historical biogeography, and shifts in speciation rates of Myrtales (70 citations)
  • Salvia united: The greatest good for the greatest number (55 citations)

In his most recent research, the most cited papers focused on:

  • Genus
  • Ecology
  • Botany

His primary areas of investigation include Ecology, Clade, Evolutionary biology, Phylogenetic tree and Taxon. His research brings together the fields of Lineage and Ecology. In his work, he performs multidisciplinary research in Clade and Brassicales.

Kenneth J. Sytsma interconnects Ericales, Phylogenetics, Cladogenesis, Genome and Phylogenomics in the investigation of issues within Evolutionary biology. His work in the fields of Arbutoideae overlaps with other areas such as Crypteroniaceae. Kenneth J. Sytsma has researched Taxon in several fields, including Vicariance and NdhF.

Best Publications

  • Angiosperm phylogeny: 17 genes, 640 taxa

    Douglas E. Soltis;Stephen A. Smith;Nico Cellinese;Kenneth J. Wurdack

  • Molecular evolution and adaptive radiation

    Thomas J. Givnish;Kenneth Jay Sytsma

  • Phylogeny, adaptive radiation, and historical biogeography in Bromeliaceae: Insights from an eight-locus plastid phylogeny

    Thomas J. Givnish;Michael H. J. Barfuss;Benjamin Van Ee;Benjamin Van Ee;Ricarda Riina;Ricarda Riina

  • Angiosperm Phylogeny Inferred from 18S Ribosomal DNA Sequences

    Douglas E. Soltis;Pamela S. Soltis;Daniel L. Nickrent;Leigh A. Johnson

  • Salvia (Lamiaceae) is not monophyletic: implications for the systematics, radiation, and ecological specializations of Salvia and tribe Mentheae

    Jay B. Walker;Kenneth J. Sytsma;Jens Treutlein;Michael Wink

  • Origin, adaptive radiation and diversification of the Hawaiian lobeliads (Asterales: Campanulaceae)

    Thomas J Givnish;Kendra C Millam;Austin R Mast;Thomas B Paterson

  • Adaptive radiation, correlated and contingent evolution, and net species diversification in Bromeliaceae

    Thomas J. Givnish;Michael H.J. Barfuss;Benjamin Van Ee;Ricarda Riina

  • Family-level relationships of Onagraceae based on chloroplast rbcL and ndhF data

    Rachel A. Levin;Warren L. Wagner;Peter C. Hoch;Molly Nepokroeff

  • Staminal Evolution in the Genus Salvia (Lamiaceae): Molecular Phylogenetic Evidence for Multiple Origins of the Staminal Lever

    Jay B. Walker;Kenneth J. Sytsma

  • Phylogeny of Capparaceae and Brassicaceae based on chloroplast sequence data.

    Jocelyn C. Hall;Kenneth J. Sytsma;Hugh H. Iltis

  • PHYLOGENY, ADAPTIVE RADIATION, AND HISTORICAL BIOGEOGRAPHY OF BROMELIACEAE INFERRED FROM ndhF SEQUENCE DATA

    Thomas J Givnish;Kendra C Millam;Paul E Berry;Kenneth J Sytsma

  • A Phylogenetic Analysis of Epilobium (Onagraceae) Based on Nuclear Ribosomal DNA Sequences

    David A. Baum;Kenneth J. Sytsma;Peter C. Hoch

  • Ancient Vicariance or Recent Long‐Distance Dispersal? Inferences about Phylogeny and South American–African Disjunctions in Rapateaceae and Bromeliaceae Based on ndhF Sequence Data

    Thomas J. Givnish;Kendra C. Millam;Timothy M. Evans;Jocelyn C. Hall

  • Urticalean rosids: circumscription, rosid ancestry, and phylogenetics based on rbcL, trnL-F, and ndhF sequences

    Kenneth J. Sytsma;Jeffery Morawetz;J. Chris Pires;Molly Nepokroeff

  • Congruence versus phylogenetic accuracy: revisiting the incongruence length difference test.

    Andrew L. Hipp;Jocelyn C. Hall;Kenneth J. Sytsma

  • Clades, Clocks, and Continents: Historical and Biogeographical Analysis of Myrtaceae, Vochysiaceae, and Relatives in the Southern Hemisphere

    Kenneth J. Sytsma;Amy Litt;Michelle L. Zjhra;J. Chris Pires

  • Parallel evolution of glucosinolate biosynthesis inferred from congruent nuclear and plastid gene phylogenies.

    James E. Rodman;Pamela S. Soltis;Douglas E. Soltis;Kenneth J. Sytsma

  • Reorganization of the genus Psychotria and tribe Psychotrieae (Rubiaceae) inferred from ITS and rbcL sequence data

    Molly Nepokroeff;Birgitta Bremer;Kenneth J. Sytsma

  • CHLOROPLAST DNA EVOLUTION AND PHYLOGENETIC RELATIONSHIPS IN CLARKIA SECT. PERIPETASMA (ONAGRACEAE).

    Kenneth J. Sytsma;Leslie D. Gottlieb

  • Evolution of Populus nigra (sect. Aigeiros): introgressive hybridization and the chloroplast contribution of Populus alba (sect. Populus).

    Randy L. Smith;Kenneth J. Sytsma

  • Molecules, morphology, and Dahlgren's expanded order Capparales

    James E. Rodman;Kenneth G. Karol;Robert A. Price;Kenneth J. Sytsma

  • Molecular Systematics: 1994–1995

    Kenneth J. Sytsma;William J. Hahn

Frequent Co-Authors

Thomas J. Givnish
Thomas J. Givnish University of Wisconsin–Madison
J. Chris Pires
J. Chris Pires Colorado State University
Elena Conti
Elena Conti University of Zurich
David A. Baum
David A. Baum University of Wisconsin–Madison
Mark W. Chase
Mark W. Chase Royal Botanic Gardens
Eric H. Roalson
Eric H. Roalson Washington State University
Kenneth M. Cameron
Kenneth M. Cameron University of Wisconsin–Madison
Jürg Schönenberger
Jürg Schönenberger University of Vienna
Elizabeth A. Zimmer
Elizabeth A. Zimmer National Museum of Natural History
David M. Spooner
David M. Spooner US Department of Agriculture

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