Norris H. Williams

Norris H. Williams 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 Norris H. Williams sits on this spectrum.

Norris H. Williams 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 Norris H. Williams sits on this spectrum.

Research.com Recognitions

• 1931 - Fellow of American Physical Society (APS)

Best Publications

• Orchid phylogenomics and multiple drivers of their extraordinary diversification.

  Thomas J. Givnish;Daniel Spalink;Mercedes Ames;Stephanie P. Lyon

  557
  Citations

• ORCHID FLORAL FRAGRANCES AND MALE EUGLOSSINE BEES: METHODS AND ADVANCES IN THE LAST SESQUIDECADE

  Norris H. Williams;W. Mark Whitten

  391
  Citations

• Evolution along the crassulacean acid metabolism continuum

  Katia Silvera;Kurt M. Neubig;W. Mark Whitten;Norris H. Williams

  260
  Citations

• Subtribal and generic relationships of Maxillarieae (Orchidaceae) with emphasis on Stanhopeinae: combined molecular evidence

  W. Mark Whitten;Norris H. Williams;Mark W. Chase

  250
  Citations

• Orchid historical biogeography, diversification, Antarctica and the paradox of orchid dispersal

  Thomas J. Givnish;Daniel Spalink;Mercedes Ames;Stephanie P. Lyon

  222
  Citations

• SELECTIVE ATTRACTION OF MALE EUGLOSSINE BEES TO ORCHID FLORAL FRAGRANCES AND ITS IMPORTANCE IN LONG DISTANCE POLLEN FLOW.

  Norris H. Williams;Calaway H. Dodson

  218
  Citations

• Phylogenetic utility of ycf1 in orchids: a plastid gene more variable than matK

  Kurt M. Neubig;W. Mark Whitten;Barbara S. Carlsward;Mario A. Blanco;Mario A. Blanco

  201
  Citations

• Floral Fragrances and Isolating Mechanisms in the Genus Catasetum (Orchidaceae)

  Harold G. Hills;Norris H. Williams;Calaway H. Dodson

  173
  Citations

• Molecular phylogenetics of Vandeae (Orchidaceae) and the evolution of leaflessness.

  Barbara S. Carlsward;Barbara S. Carlsward;W. Mark Whitten;Norris H. Williams;Benny Bytebier

  151
  Citations

• Seven New Complete Plastome Sequences Reveal Rampant Independent Loss of the ndh Gene Family across Orchids and Associated Instability of the Inverted Repeat/Small Single-Copy Region Boundaries.

  Hyoung Tae Kim;Jung Sung Kim;Michael J. Moore;Kurt M. Neubig

  140
  Citations

• Generic recircumscriptions of Oncidiinae (Orchidaceae: Cymbidieae) based on maximum likelihood analysis of combined DNA datasets

  Kurt M. Neubig;Kurt M. Neubig;William Mark Whitten;Norris H. Williams;Norris H. Williams;Mario A. Blanco;Mario A. Blanco;Mario A. Blanco

  135
  Citations

• Molecular phylogenetics of Maxillaria and related genera (Orchidaceae: Cymbidieae) based on combined molecular data sets

  W. Mark Whitten;Mario A. Blanco;Norris H. Williams;Samantha Koehler

  125
  Citations

• Floral convergence in Oncidiinae (Cymbidieae; Orchidaceae): an expanded concept of Gomesa and a new genus Nohawilliamsia

  Mark W. Chase;Norris H. Williams;Aparacida Donisete de Faria;Kurt M. Neubig

  123
  Citations

• Life History Evolution and Genome Size in Subtribe Oncidiinae (Orchidaceae)

  Mark W. Chase;Lynda Hanson;Victor A. Albert;W. Mark Whitten

  119
  Citations

• Generic realignments in Maxillariinae (Orchidaceae)

  Mario A Blanco;German Carnevali;W. Mark Witten;Rodrigo B. Singer

  103
  Citations

• Carvone Oxide: An Example of Convergent Evolution in Euglossine Pollinated Plants

  W. Mark Whitten;Norris H. Williams;Merle A. Battiste;Lucjan Strekowski

  92
  Citations

• Function of glandular secretions in fragrance collection by male Euglossine bees (Apidae: Euglossini)

  Whitten Wm;Young Am;Williams Nh

  88
  Citations

• Selective Attraction of Male Euglossine Bees to Orchid Floral Fragrances and Its Importance in Long Distance Pollen Flow

  Unknown

  87
  Citations

• Convergent evolution of floral signals underlies the success of Neotropical orchids

  Alexander S. T. Papadopulos;Martyn P. Powell;Martyn P. Powell;Martyn P. Powell;Franco Pupulin;Jorge Warner

  84
  Citations

• Generic circumscription and relationships in the tribe Melanthieae (Liliales, Melanthiaceae), with emphasis on Zigadenus: evidence from ITS and trnL-F sequence data

  Wendy B. Zomlefer;Norris H. Williams;W. Mark Whitten;Walter S. Judd

  76
  Citations

• An Overview of Veratrum s.l. (Liliales: Melanthiaceae) and an Infrageneric Phylogeny Based on ITS Sequence Data

  Wendy B. Zomlefer;W. Mark Whitten;Norris H. Williams;Walter S. Judd

  63
  Citations

• Safrole, the Main Component of the Essential Oil from Piper auritum of Panama

  Mahabir P. Gupta;Tomás D. Arias;Norris H. Williams;R. Bos

  56
  Citations

• Molecular phylogenetics of Neotropical leafless Angraecinae (Orchidaceae): reevaluation of generic concepts.

  Barbara S. Carlsward;W. Mark Whitten;Norris H. Williams

  55
  Citations

• Subsidiary cells in the Orchidaceae: their general distribution with special reference to development in the Oncidieae

  N. H. Williams

  53
  Citations

• Molecular phylogeny and floral fragrances of male euglossine bee-pollinated orchids : a study of Stanhopea (Orchidaceae)

  Norris H. Williams;W. Mark Whitten

  35
  Citations

• GENERIC RELATIONSHIPS OF ZYGOPETALINAE (ORCHIDACEAE: CYMBIDIEAE): COMBINED MOLECULAR EVIDENCE

  W. Mark Whitten;Norris H. Williams;Robert L. Dressler;Günter Gerlach

  35
  Citations