H. E. K. Hartmann

651 total citations
41 papers, 302 citations indexed

About

H. E. K. Hartmann is a scholar working on Ecology, Evolution, Behavior and Systematics, Plant Science and Molecular Biology. According to data from OpenAlex, H. E. K. Hartmann has authored 41 papers receiving a total of 302 indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Ecology, Evolution, Behavior and Systematics, 21 papers in Plant Science and 15 papers in Molecular Biology. Recurrent topics in H. E. K. Hartmann's work include Plant Diversity and Evolution (34 papers), Plant and Fungal Species Descriptions (14 papers) and Plant and animal studies (13 papers). H. E. K. Hartmann is often cited by papers focused on Plant Diversity and Evolution (34 papers), Plant and Fungal Species Descriptions (14 papers) and Plant and animal studies (13 papers). H. E. K. Hartmann collaborates with scholars based in Germany, South Africa and Canada. H. E. K. Hartmann's co-authors include Volker Bittrich, Sigrid Liede‐Schumann, Ulrich Meve, Alastair Potts, Nicolai M. Nürk, Guido W. Grimm, Steffen Rust, Charlotte Mienie, T. Lelley and Rowan F. Sage and has published in prestigious journals such as American Journal of Botany, Taxon and PeerJ.

In The Last Decade

H. E. K. Hartmann

37 papers receiving 254 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
H. E. K. Hartmann Germany	10	257	139	129	55	23	41	302
John K. Boggan United States	8	245 1.0×	158 1.1×	167 1.3×	38 0.7×	32 1.4×	10	313
Rodrigo Duno de Stéfano Mexico	7	181 0.7×	87 0.6×	108 0.8×	34 0.6×	20 0.9×	36	248
Jefferson Carvalho-Sobrinho Brazil	12	246 1.0×	114 0.8×	127 1.0×	30 0.5×	35 1.5×	27	313
C. Matt Guilliams United States	7	301 1.2×	183 1.3×	147 1.1×	40 0.7×	53 2.3×	23	350
Warren Cardinal‐McTeague Canada	8	193 0.8×	123 0.9×	125 1.0×	67 1.2×	19 0.8×	14	273
Alessandra Ike Coan Brazil	12	340 1.3×	172 1.2×	172 1.3×	24 0.4×	22 1.0×	46	402
Roberto M. Salas Argentina	10	336 1.3×	77 0.6×	165 1.3×	21 0.4×	20 0.9×	73	389
Rosângela Simão‐Bianchini Brazil	12	265 1.0×	86 0.6×	133 1.0×	24 0.4×	31 1.3×	47	314
Antonio Carlos Webber Brazil	9	353 1.4×	191 1.4×	119 0.9×	59 1.1×	8 0.3×	20	383
Timothée Le Péchon France	11	335 1.3×	70 0.5×	169 1.3×	53 1.0×	6 0.3×	27	365

Countries citing papers authored by H. E. K. Hartmann

Since Specialization

Citations

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

Fields of papers citing papers by H. E. K. Hartmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. E. K. Hartmann. 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 H. E. K. Hartmann. The network helps show where H. E. K. Hartmann may publish in the future.

Co-authorship network of co-authors of H. E. K. Hartmann

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

Liede‐Schumann, Sigrid, Guido W. Grimm, Nicolai M. Nürk, et al.. (2020). Phylogenetic relationships in the southern African genus Drosanthemum (Ruschioideae, Aizoaceae). PeerJ. 8. e8999–e8999. 10 indexed citations

Hartmann, H. E. K.. (2017). Aizoaceae. DIAL (Catholic University of Leuven). 4 indexed citations

Hartmann, H. E. K.. (2016). Illustrated handbook of succulent plants. 6 indexed citations

Khoshravesh, Roxana, et al.. (2014). Gisekia (Gisekiaceae): Phylogenetic relationships, biogeography, and ecophysiology of a poorly known C₄ lineage in the Caryophyllales. American Journal of Botany. 101(3). 499–509. 10 indexed citations

Hartmann, H. E. K. & Sigrid Liede‐Schumann. (2013). Knersiagen. nov., an emigrant fromDrosanthemum(Ruschieae, Ruschioideae, Aizoaceae). Bradleya. 31(31). 116–127. 4 indexed citations

Hartmann, H. E. K., et al.. (2012). A Gordion knot in Ruschioideae (Aizoaceae): Acrodon and Brianhuntleya in an attempt to disentangle the confusion. Bradleya. 30(30). 33–60.

Hartmann, H. E. K., et al.. (2011). DrosanthemumsubgenusSpeciosa(Aizoaceae): towards a revision of the plants with black staminodes. Bradleya. 29(29). 143–178. 3 indexed citations

Hartmann, H. E. K., Ulrich Meve, & Sigrid Liede‐Schumann. (2011). Towards a revision of Trianthema, the Cinderella of Aizoaceae. Plant Ecology and Evolution. 144(2). 177–213. 8 indexed citations

Hartmann, H. E. K.. (2008). A carnival of flowers in Drosanthemum subgenus Speciosa (Aizoaceae). Bradleya. 26(26). 99–120. 5 indexed citations

10.

Hartmann, H. E. K., et al.. (2005). Conspectus of Aizoaceae, Gisekiaceae and Molluginaceae of Egypt and the Sudan. Feddes Repertorium. 116(1-2). 1–42. 4 indexed citations

11.

Rust, Steffen, et al.. (2002). The flowers of Drosanthemum Schwantes (Ruschioideae, Aizoaceae). Bradleya. 20(20). 121–146. 6 indexed citations

12.

Hartmann, H. E. K., et al.. (1998). Taxonomic notes on the genus Khadia (Mesembryanthemaceae / Aizoaceae). Bothalia. 28(1). 25–33. 4 indexed citations

13.

Hartmann, H. E. K.. (1998). New combinations in <i>Antimima</i> (Ruschioideae, Aizoaceae) from southern Africa. Bothalia. 28(1). 67–82. 11 indexed citations

14.

Hartmann, H. E. K.. (1998). New combinations in Ruschioideae, based on studies inRuschia(Aizoaceae). Bradleya. 16(16). 44–91. 16 indexed citations

15.

Hartmann, H. E. K.. (1992). Revision of the genus Vanheerdea L. Bolus ex H.E.K. Hartmann (Aizoaceae). Bradleya. 10(10). 5–16. 1 indexed citations

16.

Hartmann, H. E. K.. (1991). Keys to the genera of Mesembryanthema. South African Journal of Botany. 57(2). 95–106. 4 indexed citations

17.

Hartmann, H. E. K., et al.. (1990). Shedding light on windows - in Conophytum.. Cactus and Succulent Journal. 62(1). 35–42. 3 indexed citations

18.

Hartmann, H. E. K.. (1989). A re-examination of the genus <i>Amphibolia</i> (Mesembryanthemaceae). Bothalia. 19(2). 179–182. 4 indexed citations

19.

Hartmann, H. E. K.. (1987). Phytogeography of the subtribe Leipoldtiinae (Mesembryanthemaceae). Bothalia. 17(2). 205–212. 2 indexed citations

20.

Hartmann, H. E. K.. (1986). Notes on the genus Cephalophyllum: chromosome numbers in the genus Cephalophyllum n.e.Br. (Mesembryanthemaceae). 2 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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