R. E. Holttum
- Ecology, Evolution, Behavior and Systematics top 0.5%
- Plant Science top 5%
- Molecular Biology
- Cell Biology top 10%
- Nature and Landscape Conservation top 10%
- Co-authors
- R. M. TryonAlice F. TryonGunnar SeidenfadenW. B. TurrillPaula J. EdwardsDavid B. LellingerS. K. RoyC.G.G.J. van Steenis
- Topics
- Fern and Epiphyte Biology (79 papers)Plant Diversity and Evolution (46 papers)Plant and animal studies (40 papers)
- Partner nations
- United KingdomNetherlandsDenmark
In The Last Decade
R. E. Holttum
115 papers receiving 1.6k citations
Hit Papers
Peers
Comparison fields: 5 of 62
- Ecology, Evolution, Behavior and Systematics 1.7k
- Plant Science 488
- Molecular Biology 362
- Cell Biology 124
- Nature and Landscape Conservation 122
Countries citing papers authored by R. E. Holttum
This map shows the geographic impact of R. E. Holttum'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 R. E. Holttum with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. E. Holttum more than expected).
Fields of papers citing papers by R. E. Holttum
This network shows the impact of papers produced by R. E. Holttum. 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 R. E. Holttum. The network helps show where R. E. Holttum may publish in the future.
Co-authorship network of co-authors of R. E. Holttum
This figure shows the co-authorship network connecting the top 25 collaborators of R. E. Holttum. A scholar is included among the top collaborators of R. E. Holttum 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 R. E. Holttum. R. E. Holttum is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | TREE-FERNS OF THE GENUS CYATHEA IN JAVA | 2 |
| 2 | THE FERN-GENUS ARCYPTERIS UNDERWOOD (Dictyopteris PresI sensu Fee) | 0 |
| 3 | FURTHER NOTES ON THE FERN-GENUS HETEROGONIUM PRESL | 0 |
| 4 | THE FERN-GENUS PLEOCNEMIA PRESL | 2 |
| 5 | ADDITIONS TO THE FERN FLORA OF JAVA | 0 |
| 6 | The orchids of peninsular Malaysia and Singapore. | 113 |
| 7 | Studies in the fern genera allied to Tectaria Cav. IV. The genus Ctenitis in Asia, Malesia and the Western Pacific | 7 |
| 8 | Studies in the fern-genera allied to Tectaria. III. Aenigmopteris and Ataxipteris, two new genera allied to Tectaria Cav., with comments on Psomiocarpa Presl | 6 |
| 9 | 0 | |
| 10 | Studies in the family Thelypteridaceae VIII. The genera Mesophlebion and Plesioneuron | 6 |
| 11 | Studies in the family Thelypteridaceae V. The genus Pneumatopteris Nakai | 10 |
| 12 | Studies in the family Thelypteridaceae IV. The genus Pronephrium Presl | 7 |
| 13 | Stusies in the Family Thelypteridaceae. III. A new system of genera in the Old World | 45 |
| 14 | Four new species of ferns from New Guinea | 2 |
| 15 | Florae Malesianae Precursores XLIV. The fern-genus Elaphoglossum in Malesia, with descriptions of new species | 1 |
| 16 | New species of Malaysian ferns | 2 |
| 17 | Vegetative characters distinguishing the various groups of ferns included in Dryopteris of Christensen's Index Filicum, and other ferns of similar habit and sori | 8 |
| 18 | NOTES ON TAXONOMY AND NOMENCLATURE IN THE GENUS LYGODIUM (SCHIZAEACEAE) | 13 |
| 19 | FLORAE MALESIANAE PRAECURSORES XVI ON THE TAXONOMIC SUBDIVISION OF THE GLEICHENIACEAE, WITH DESCRIPTIONS OF NEW MALAYSIAN SPECIES AND VARIETIES | 8 |
| 20 | Growth habits of monocotyledons | 7 |
About R. E. Holttum
R. E. Holttum is a scholar working on Ecology, Evolution, Behavior and Systematics, Plant Science and Cell Biology, having authored 127 papers that have together received 1.9k indexed citations. Recurring topics across this work include Fern and Epiphyte Biology (79 papers), Plant Diversity and Evolution (46 papers) and Plant and animal studies (40 papers). The work is most often cited by research in Ecology, Evolution, Behavior and Systematics (1.7k citations), Plant Science (488 citations) and Nature and Landscape Conservation (122 citations). R. E. Holttum has collaborated with scholars based in United Kingdom, Netherlands and Denmark. Frequent co-authors include R. M. Tryon, Alice F. Tryon, Gunnar Seidenfaden, W. B. Turrill, Paula J. Edwards, David B. Lellinger, S. K. Roy, C.G.G.J. van Steenis, A. H. G. Alston and James W. Grimes. Their work appears in journals such as Nature, SHILAP Revista de lepidopterología and Taxon.
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.