Michael H. Grayum

1.6k total citations
55 papers, 1.3k citations indexed

About

Michael H. Grayum is a scholar working on Ecology, Evolution, Behavior and Systematics, Molecular Biology and Plant Science. According to data from OpenAlex, Michael H. Grayum has authored 55 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 49 papers in Ecology, Evolution, Behavior and Systematics, 18 papers in Molecular Biology and 17 papers in Plant Science. Recurrent topics in Michael H. Grayum's work include Plant and animal studies (32 papers), Plant Diversity and Evolution (24 papers) and Plant and Fungal Species Descriptions (17 papers). Michael H. Grayum is often cited by papers focused on Plant and animal studies (32 papers), Plant Diversity and Evolution (24 papers) and Plant and Fungal Species Descriptions (17 papers). Michael H. Grayum collaborates with scholars based in United States, Costa Rica and Colombia. Michael H. Grayum's co-authors include Kamaljit S. Bawa, Rollin E. Coville, Donald R. Perry, Stephen H. Bullock, Barry E. Hammel, Simon Joseph Mayo, David B. Clark, Deborah A. Clark, Gary S. Hartshorn and Harry W. Greene and has published in prestigious journals such as American Journal of Botany, Taxon and The Botanical Review.

In The Last Decade

Michael H. Grayum

54 papers receiving 1.2k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Michael H. Grayum United States	15	1.1k	460	431	285	99	55	1.3k
P. J. Garnock‐Jones New Zealand	19	1.1k 1.0×	932 2.0×	601 1.4×	261 0.9×	176 1.8×	87	1.6k
David H. Lorence United States	17	701 0.6×	317 0.7×	320 0.7×	304 1.1×	173 1.7×	92	1.1k
Clodomiro Marticorena Chile	15	692 0.6×	489 1.1×	171 0.4×	255 0.9×	168 1.7×	54	1.1k
Erin A. Tripp United States	21	1.2k 1.1×	732 1.6×	580 1.3×	191 0.7×	112 1.1×	109	1.5k
Ilse Breitwieser New Zealand	20	663 0.6×	541 1.2×	380 0.9×	144 0.5×	66 0.7×	60	1000
C. C. Berg Netherlands	16	878 0.8×	570 1.2×	270 0.6×	291 1.0×	48 0.5×	74	1.1k
Bruce K. Holst United States	11	1.3k 1.2×	442 1.0×	410 1.0×	272 1.0×	83 0.8×	41	1.7k
Scott Zona United States	17	770 0.7×	525 1.1×	253 0.6×	313 1.1×	174 1.8×	64	1.3k
Jean‐Christophe Pintaud France	19	755 0.7×	322 0.7×	428 1.0×	228 0.8×	136 1.4×	51	1.2k
Rafaela Campostrini Forzza Brazil	21	1.3k 1.2×	419 0.9×	320 0.7×	240 0.8×	74 0.7×	107	1.6k

Countries citing papers authored by Michael H. Grayum

Since Specialization

Citations

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

Fields of papers citing papers by Michael H. Grayum

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Michael H. Grayum. 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 Michael H. Grayum. The network helps show where Michael H. Grayum may publish in the future.

Co-authorship network of co-authors of Michael H. Grayum

This figure shows the co-authorship network connecting the top 25 collaborators of Michael H. Grayum. A scholar is included among the top collaborators of Michael H. Grayum 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 Michael H. Grayum. Michael H. Grayum 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

Hodel, Donald R. & Michael H. Grayum. (2019). (2670) Proposal to conserve the name Plumeria alba (Apocynaceae) with a conserved type. Taxon. 68(1). 165–166. 3 indexed citations

Grayum, Michael H., et al.. (2017). A New Species of Wettinia (Arecaceae: Arecoideae: Iriarteeae) from Panama. Novon A Journal for Botanical Nomenclature. 25(2). 145–149. 2 indexed citations

Frankie, Gordon W., S. Bradleigh Vinson, Mark Rizzardi, et al.. (2013). Relationships of Bees to Host Ornamental and Weedy Flowers in Urban Northwest Guanacaste Province, Costa Rica. Journal of the Kansas Entomological Society. 86(4). 325–351. 24 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. & 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

Haigh, A., Josef Bogner, Peter C. Boyce, et al.. (2008). A New Website for Araceae Taxonomy on www.cate-araceae.org. 31(1). 148–154.

Bawa, Kamaljit S., et al.. (2003). Relationships among time, frequency, and duration of flowering in tropical rain forest trees. American Journal of Botany. 90(6). 877–887. 95 indexed citations

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

Grayum, Michael H., et al.. (2002). Vegetación del Parque Nacional Carara, Costa Rica. Brenesia. 25–66. 5 indexed citations

10.

Grayum, Michael H.. (1997). Nomenclatural and taxonomic notes on Costa Rican Araceae. Phytologia. 82. 30–57. 8 indexed citations

11.

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

12.

Grayum, Michael H.. (1992). Comparative external pollen ultrastructure of the Araceae and putatively related taxa. Biodiversity Heritage Library (Smithsonian Institution). 15 indexed citations

13.

Grayum, Michael H.. (1992). New species of Philodendron subgenus Pteromischum (Araceae) from Mesoamerica and Pacific South America. Phytologia. 73. 30–39. 1 indexed citations

14.

Grayum, Michael H.. (1991). Chlorospatha kressii (Araceae), a New Compound-Leaved Species from Chocó Department, Colombia. Novon A Journal for Botanical Nomenclature. 1(1). 12–12. 1 indexed citations

15.

Grayum, Michael H. & Nelson Zamora. (1991). Hernandia lychnifera (Hernandiaceae), a New Species from Coastal Ecuador. Novon A Journal for Botanical Nomenclature. 1(1). 17–17. 2 indexed citations

16.

Grayum, Michael H.. (1987). A SUMMARY OF EVIDENCE AND ARGUMENTS SUPPORTING THE REMOVAL OF ACORUS FROM THE ARACEAE. Taxon. 36(4). 723–729. 44 indexed citations

17.

Grayum, Michael H., et al.. (1986). Four rare eurasian adventives in the flora of Western Massachusetts. Rhodora. 88(855). 413–417. 1 indexed citations

18.

Grayum, Michael H.. (1986). Phylogenetic implications of pollen nuclear number in theAraceae. Plant Systematics and Evolution. 151(3-4). 145–161. 8 indexed citations

19.

Grayum, Michael H., et al.. (1984). Natural history observations and ecological evaluation of the la selva protection zone, costa rica. Brenesia. 189–206. 29 indexed citations

20.

Grayum, Michael H.. (1984). PALYNOLOGY AND PHYLOGENY OF THE ARACEAE. ScholarWorks@UMassAmherst (University of Massachusetts Amherst). 44 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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