J. J. Spies
- Plant Science top 5%
- Ecology, Evolution, Behavior and Systematics top 2%
- Molecular Biology
- Genetics
- Insect Science top 10%
- Co-authors
- Rouvay Roodt‐WildingC. H. StirtonH.J.T. VenterGerrit DavidseG. E. Gibbs RussellC. M. BenderElizabeth van der MerweF. J. Kloppers
- Topics
- Plant Taxonomy and Phylogenetics (42 papers)Chromosomal and Genetic Variations (21 papers)Botanical Research and Chemistry (20 papers)
- Partner nations
- South AfricaUnited StatesUnited Kingdom
In The Last Decade
J. J. Spies
73 papers receiving 457 citations
Peers
Comparison fields: 5 of 40
- Plant Science 393
- Ecology, Evolution, Behavior and Systematics 377
- Molecular Biology 139
- Genetics 48
- Insect Science 45
Countries citing papers authored by J. J. Spies
This map shows the geographic impact of J. J. Spies'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 J. J. Spies with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. J. Spies more than expected).
Fields of papers citing papers by J. J. Spies
This network shows the impact of papers produced by J. J. Spies. 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 J. J. Spies. The network helps show where J. J. Spies may publish in the future.
Co-authorship network of co-authors of J. J. Spies
This figure shows the co-authorship network connecting the top 25 collaborators of J. J. Spies. A scholar is included among the top collaborators of J. J. Spies 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 J. J. Spies. J. J. Spies is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 0 | |
| 2 | 18 | |
| 3 | 15 | |
| 4 | 1 | |
| 5 | 2 | |
| 6 | Hyacinthaceae. Chromosome studies on African plants. 13. Lachenalia mutabilis, L. pustulata and L. unicolor. | 4 |
| 7 | Poaceae. Apomictic embryo sac development in Cenchrus ciliaris (Panicoideae). | 7 |
| 8 | 5 | |
| 9 | 2 | |
| 10 | 5 | |
| 11 | 10 | |
| 12 | 5 | |
| 13 | Chromosome studies on African plants. 8. | 10 |
| 14 | Sterile lantana camara fact or theory | 10 |
| 15 | 6 | |
| 16 | 43 | |
| 17 | 10 | |
| 18 | 6 | |
| 19 | 3 | |
| 20 | 2 |
About J. J. Spies
J. J. Spies is a scholar working on Ecology, Evolution, Behavior and Systematics, Forestry and Plant Science, having authored 78 papers that have together received 544 indexed citations. Recurring topics across this work include Plant Taxonomy and Phylogenetics (42 papers), Chromosomal and Genetic Variations (21 papers) and Botanical Research and Chemistry (20 papers). The work is most often cited by research in Ecology, Evolution, Behavior and Systematics (377 citations), Plant Science (393 citations) and Forestry (33 citations). J. J. Spies has collaborated with scholars based in South Africa, United States and United Kingdom. Frequent co-authors include Rouvay Roodt‐Wilding, C. H. Stirton, H.J.T. Venter, Gerrit Davidse, G. E. Gibbs Russell, C. M. Bender, Elizabeth van der Merwe, F. J. Kloppers, Maryke Labuschagne and Shimelis Hussein. Their work appears in journals such as American Journal of Botany, Taxon and Journal of Evolutionary Biology.
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.