Barry E. Hammel

951 total citations
48 papers, 431 citations indexed

About

Barry E. Hammel is a scholar working on Ecology, Evolution, Behavior and Systematics, Molecular Biology and Plant Science. According to data from OpenAlex, Barry E. Hammel has authored 48 papers receiving a total of 431 indexed citations (citations by other indexed papers that have themselves been cited), including 43 papers in Ecology, Evolution, Behavior and Systematics, 22 papers in Molecular Biology and 15 papers in Plant Science. Recurrent topics in Barry E. Hammel's work include Plant and animal studies (29 papers), Plant Diversity and Evolution (27 papers) and Plant and Fungal Species Descriptions (22 papers). Barry E. Hammel is often cited by papers focused on Plant and animal studies (29 papers), Plant Diversity and Evolution (27 papers) and Plant and Fungal Species Descriptions (22 papers). Barry E. Hammel collaborates with scholars based in United States, Costa Rica and Mexico. Barry E. Hammel's co-authors include Michael H. Grayum, Nelson Zamora, George J. Wilder, John C. Cushman, Hans Gehrig, Jorge Aranda, Klaus Winter, Aurelio Virgo, Frank Almeda and Roosevelt García‐Villacorta and has published in prestigious journals such as Taxon, Amino Acids and Annals of the Missouri Botanical Garden.

In The Last Decade

Barry E. Hammel

44 papers receiving 389 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Barry E. Hammel United States	10	368	168	152	41	34	48	431
Mark T. Strong United States	8	336 0.9×	94 0.6×	270 1.8×	78 1.9×	31 0.9×	27	495
W.J.J.O. de Wilde Netherlands	11	272 0.7×	159 0.9×	177 1.2×	23 0.6×	20 0.6×	82	391
Kent Kainulainen Sweden	13	480 1.3×	291 1.7×	224 1.5×	27 0.7×	17 0.5×	30	575
Jan W. Maas Netherlands	9	470 1.3×	398 2.4×	164 1.1×	28 0.7×	46 1.4×	9	667
Pablo Muñoz‐Rodríguez United Kingdom	13	250 0.7×	189 1.1×	234 1.5×	35 0.9×	9 0.3×	32	500
Miriam Monserrat Ferrer Mexico	10	262 0.7×	151 0.9×	206 1.4×	52 1.3×	17 0.5×	28	403
Joseph H. Kirkbride United States	16	531 1.4×	234 1.4×	419 2.8×	77 1.9×	22 0.6×	62	811
K. Pinney United States	13	125 0.3×	205 1.2×	333 2.2×	20 0.5×	13 0.4×	20	422
Ricardo Callejas Colombia	9	242 0.7×	135 0.8×	138 0.9×	49 1.2×	9 0.3×	20	394
José Luis Fernández Alonso Colombia	10	301 0.8×	130 0.8×	242 1.6×	175 4.3×	23 0.7×	132	524

Countries citing papers authored by Barry E. Hammel

Since Specialization

Citations

This map shows the geographic impact of Barry E. Hammel'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 Barry E. Hammel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Barry E. Hammel more than expected).

Fields of papers citing papers by Barry E. Hammel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Barry E. Hammel. 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 Barry E. Hammel. The network helps show where Barry E. Hammel may publish in the future.

Co-authorship network of co-authors of Barry E. Hammel

This figure shows the co-authorship network connecting the top 25 collaborators of Barry E. Hammel. A scholar is included among the top collaborators of Barry E. Hammel 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 Barry E. Hammel. Barry E. Hammel is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Luján, Manuel, et al.. (2024). Clusia salicifolia (Clusiaceae), a new hemiepiphyte species from Costa Rica and Panama. Kew Bulletin. 79(2). 185–190.

Zotz, Gerhard, Frank Almeda, Salvador Arias, Barry E. Hammel, & Emerson Ricardo Pansarin. (2021). Do secondary hemiepiphytes exist?. Journal of Tropical Ecology. 37(6). 286–290. 11 indexed citations

Hammel, Barry E.. (2015). Three new species of Pentagonia (Rubiaceae) from southern Central America, one foreseen, two surprising. Biodiversity Heritage Library (Smithsonian Institution). 3 indexed citations

Hammel, Barry E.. (2015). Three new species of Marcgraviaceae from Costa Rica, with references to related species and notes on the generic placement of Schwartzia jimenezii. Lankesteriana. 6(2). 3 indexed citations

Grayum, Michael H., et al.. (2012). Validation of a scientific name for the Tahitian lime. Biodiversity Heritage Library (Smithsonian Institution). 1 indexed citations

Hammel, Barry E., et al.. (2011). A new closed-flowered Calathea (Marantaceae) endemic to Costa Rica. Brenesia. 1–3. 1 indexed citations

Vogel, Steven, et al.. (2011). Aspects of reproductive ecology of Clusia valerioi Standl. and Clusia peninsulae Hammel (sp. nov.), two Central American species of Clusiaceae with resin flowers. Plant Biology. 14(1). 198–207. 2 indexed citations

Taylor, Charlotte M., Barry E. Hammel, & Roy E. Gereau. (2011). Rubiacearum Americanarum Magna Hama Pars XXVII: Six New Species and a New Taxonomic View ofPosoqueria. Novon A Journal for Botanical Nomenclature. 21(1). 118–132.

Hammel, Barry E. & Michael H. Grayum. (2011). Aegiphila brenesii, a New Name for the Long-lost (Right Before Our Eyes)Clerodendrum costaricense(Lamiaceae). Novon A Journal for Botanical Nomenclature. 21(1). 44–46. 1 indexed citations

10.

Hammel, Barry E. & Xavier Cornejo. (2009). Forestiera isabelae (Oleaceae), una Especie Nueva para Costa Rica. Novon A Journal for Botanical Nomenclature. 19(1). 52–55. 1 indexed citations

11.

Hammel, Barry E., et al.. (2003). Manual of Plants of Costa Rica, Volume II: Gymnosperms and Monocotyledons (Agavaceae-Musaceae).. Amino Acids. 28(1). 29–35. 1 indexed citations

12.

Hammel, Barry E.. (1999). Two New Species of Clusiella (Clusiaceae) with a Synopsis of the Genus. Novon A Journal for Botanical Nomenclature. 9(3). 349–349. 9 indexed citations

13.

Hammel, Barry E.. (1999). Synopsis of Chrysochlamys (Clusiaceae: Clusioideae: Clusieae) in Mesoamerica. Novon A Journal for Botanical Nomenclature. 9(3). 360–360. 12 indexed citations

14.

Grayum, Michael H. & Barry E. Hammel. (1995). The genus Tetranema (Scrophulariaceae) in Costa Rica, with two new species. Phytologia. 79. 269–280. 4 indexed citations

15.

Hammel, Barry E., et al.. (1994). New Species in the Acanthaceae of Costa Rica. Novon A Journal for Botanical Nomenclature. 4(4). 350–350. 3 indexed citations

16.

Tobe, Hiroshi & Barry E. Hammel. (1993). Floral Morphology, Embryology, and Seed Anatomy of Ruptiliocarpon caracolito (Lepidobotryaceae). Novon A Journal for Botanical Nomenclature. 3(4). 423–423. 6 indexed citations

17.

Hammel, Barry E., et al.. (1991). Neither Oak Nor Alder, But Nearly: The History of Ticodendraceae. Annals of the Missouri Botanical Garden. 78(1). 89–89. 13 indexed citations

18.

Hammel, Barry E., et al.. (1985). The Plants of 'Ocoquili' Island, San Blas Coast, Panama. Annals of the Missouri Botanical Garden. 72(2). 264–264. 2 indexed citations

19.

Hammel, Barry E. & W. G. D'Arcy. (1981). New Taxa From the Uplands of Western Panama. Annals of the Missouri Botanical Garden. 68(1). 213–213. 1 indexed citations

20.

Hammel, Barry E. & John R. Reeder. (1979). The Genus Crypsis (Gramineae) in the United States. Systematic Botany. 4(4). 267–267. 8 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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