Sandra Knapp

17.6k total citations · 2 hit papers
259 papers, 7.7k citations indexed

About

Sandra Knapp is a scholar working on Plant Science, Ecology, Evolution, Behavior and Systematics and Molecular Biology. According to data from OpenAlex, Sandra Knapp has authored 259 papers receiving a total of 7.7k indexed citations (citations by other indexed papers that have themselves been cited), including 141 papers in Plant Science, 139 papers in Ecology, Evolution, Behavior and Systematics and 94 papers in Molecular Biology. Recurrent topics in Sandra Knapp's work include Plant Diversity and Evolution (109 papers), Plant and animal studies (59 papers) and Plant Pathogens and Fungal Diseases (46 papers). Sandra Knapp is often cited by papers focused on Plant Diversity and Evolution (109 papers), Plant and animal studies (59 papers) and Plant Pathogens and Fungal Diseases (46 papers). Sandra Knapp collaborates with scholars based in United Kingdom, United States and Germany. Sandra Knapp's co-authors include Lynn Bohs, Tiina Särkinen, Mark W. Chase, David M. Spooner, James J. Clarkson, Andrew R. Leitch, Richard G. Olmstead, Iris E. Peralta, Michael Nee and Natalie H. Chapman and has published in prestigious journals such as Nature, Science and Cell.

In The Last Decade

Sandra Knapp

241 papers receiving 7.3k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Fruit Development and Ripening

2013 491 citations Sandra Knapp et al. profile →
A phylogenetic framework for evolutionary study of the nightshades (Solanaceae): a dated 1000-tip tree

2013 417 citations Tiina Särkinen, Lynn Bohs et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Sandra Knapp United Kingdom	45	4.6k	3.1k	3.1k	928	670	259	7.7k
M.J.M. Smulders Netherlands	49	4.9k 1.0×	2.8k 0.9×	1.3k 0.4×	2.1k 2.3×	441 0.7×	222	8.5k
Bruce G. Baldwin United States	44	3.7k 0.8×	3.9k 1.2×	5.9k 1.9×	1.7k 1.9×	325 0.5×	105	8.7k
Elizabeth A. Zimmer United States	49	3.1k 0.7×	5.2k 1.7×	5.3k 1.7×	1.4k 1.5×	516 0.8×	105	8.5k
Xing‐Jin He China	30	2.1k 0.4×	2.3k 0.7×	2.2k 0.7×	991 1.1×	351 0.5×	182	5.1k
Kenneth J. Sytsma United States	61	4.0k 0.9×	5.2k 1.7×	7.6k 2.5×	1.6k 1.8×	813 1.2×	150	10.7k
Javier Francisco‐Ortega United States	42	2.4k 0.5×	1.7k 0.5×	3.5k 1.1×	1.5k 1.6×	312 0.5×	166	5.1k
Guillaume Besnard France	51	3.0k 0.6×	2.7k 0.9×	2.0k 0.7×	2.4k 2.5×	519 0.8×	158	6.6k
Jun Wen United States	55	5.1k 1.1×	6.3k 2.0×	7.3k 2.4×	1.9k 2.1×	762 1.1×	356	11.7k
Zhiduan Chen China	37	2.4k 0.5×	3.8k 1.2×	4.1k 1.3×	869 0.9×	262 0.4×	181	6.3k
Quentin Cronk Canada	50	3.4k 0.7×	3.7k 1.2×	3.6k 1.2×	1.8k 1.9×	274 0.4×	182	7.8k

Countries citing papers authored by Sandra Knapp

Since Specialization

Citations

This map shows the geographic impact of Sandra Knapp's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sandra Knapp with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sandra Knapp more than expected).

Fields of papers citing papers by Sandra Knapp

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sandra Knapp. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sandra Knapp. The network helps show where Sandra Knapp may publish in the future.

Co-authorship network of co-authors of Sandra Knapp

This figure shows the co-authorship network connecting the top 25 collaborators of Sandra Knapp. A scholar is included among the top collaborators of Sandra Knapp based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sandra Knapp. Sandra Knapp is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Särkinen, Tiina, Yuri Gouvêa, Leandro Lacerda Giacomin, et al.. (2025). Taming the beasts: challenges of identification in big plant genera. Annals of Botany.

Särkinen, Tiina, et al.. (2025). On the geography of big plant genera. Annals of Botany.

Knapp, Sandra. (2024). A revision of Lycianthes (Solanaceae) in tropical Asia. PhytoKeys. 245. 1–106.

Knapp, Sandra, Tiina Särkinen, & Gloria E. Barboza. (2023). A revision of the South American species of the Morelloid clade (Solanum L., Solanaceae). PhytoKeys. 231. 1–342. 4 indexed citations

Castillo, Joaquina Albán, Asunción Cano, Edeline Gagnon, et al.. (2023). Small and in‐country herbaria are vital for accurate plant threat assessments: A case study from Peru. Plants People Planet. 6(1). 174–185. 10 indexed citations

Deanna, Rocío, Camila Martínez, Steven R. Manchester, et al.. (2023). Fossil berries reveal global radiation of the nightshade family by the early Cenozoic. New Phytologist. 238(6). 2685–2697. 4 indexed citations

Gagnon, Edeline, Sandra Knapp, Xavier Aubriot, et al.. (2023). Morphological trait evolution inSolanum(Solanaceae): Evolutionary lability of key taxonomic characters. Taxon. 72(4). 811–847. 15 indexed citations

Deanna, Rocío, Kwok Pan Chun, Deborah Navarro-Rosenblatt, et al.. (2022). Community voices: the importance of diverse networks in academic mentoring. Nature Communications. 13(1). 1681–1681. 23 indexed citations

Grace, Olwen M., Oscar A. Pérez‐Escobar, Eve Lucas, et al.. (2021). Botanical Monography in the Anthropocene. Trends in Plant Science. 26(5). 433–441. 33 indexed citations

10.

Knapp, Sandra, Franco Chiarini, Juan José Cantero, & Gloria E. Barboza. (2020). The Morelloid clade of Solanum L. (Solanaceae) in Argentina: nomenclatural changes, three new species and an updated key to all taxa. PhytoKeys. 164. 33–66. 6 indexed citations

11.

Echeverría‐Londoño, Susy, Tiina Särkinen, Isabel S. Fenton, Andy Purvis, & Sandra Knapp. (2020). Dynamism and context‐dependency in diversification of the megadiverse plant genus Solanum (Solanaceae). Journal of Systematics and Evolution. 58(6). 767–782. 29 indexed citations

12.

Gutaker, Rafał M., Clemens L. Weiß, David Ellis, et al.. (2019). The origins and adaptation of European potatoes reconstructed from historical genomes. Nature Ecology & Evolution. 3(7). 1093–1101. 74 indexed citations

13.

Knapp, Sandra, Gloria E. Barboza, Lynn Bohs, & Tiina Särkinen. (2019). A revision of the Morelloid Clade of Solanum L. (Solanaceae) in North and Central America and the Caribbean. PhytoKeys. 123. 1–144. 25 indexed citations

14.

Knapp, Sandra, et al.. (2017). A revision of the Solanum elaeagnifolium clade (Elaeagnifolium clade; subgenus Leptostemonum, Solanaceae). PhytoKeys. 84(84). 1–104. 44 indexed citations

15.

Dupin, Julia, Nicholas J. Matzke, Tiina Särkinen, et al.. (2016). Bayesian estimation of the global biogeographical history of the Solanaceae. Journal of Biogeography. 44(4). 887–899. 228 indexed citations

16.

Knapp, Sandra. (2011). Rarity, Species Richness, and the Threat of Extinction—Are Plants the Same as Animals?. PLoS Biology. 9(5). e1001067–e1001067. 17 indexed citations

17.

Knapp, Sandra. (2008). Lectotypification of Ruiz and Pavón's names in <i>Solanum</i> (Solanaceae). SHILAP Revista de lepidopterología. 1 indexed citations

18.

Peralta, Iris E., David M. Spooner, & Sandra Knapp. (2008). Taxonomy of wild tomatoes and their relatives (Solanum sect. Lycopersicoides, sect. Juglandifolia, sect. Lycopersicon; Solanaceae). 84. 164 indexed citations

19.

Seberg, Ole, et al.. (2003). Shortcuts in Systematics? A comment on DNA based taxonomy.. Trends in Ecology & Evolution. 18. 1 indexed citations

20.

Knapp, Sandra, et al.. (2000). Pollen morphology in the Anthocercideae (Solanaceae). 28(1). 7–18. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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