Walter Till

2.4k total citations · 2 hit papers
43 papers, 1.7k citations indexed

About

Walter Till is a scholar working on Ecology, Evolution, Behavior and Systematics, Cell Biology and Plant Science. According to data from OpenAlex, Walter Till has authored 43 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Ecology, Evolution, Behavior and Systematics, 12 papers in Cell Biology and 8 papers in Plant Science. Recurrent topics in Walter Till's work include Fern and Epiphyte Biology (28 papers), Plant Diversity and Evolution (18 papers) and Plant and animal studies (16 papers). Walter Till is often cited by papers focused on Fern and Epiphyte Biology (28 papers), Plant Diversity and Evolution (18 papers) and Plant and animal studies (16 papers). Walter Till collaborates with scholars based in Austria, United States and Mexico. Walter Till's co-authors include Gregory K. Brown, Michael H. J. Barfuss, Harry E. Luther, Randall G. Terry, David H. Benzing, Rosabelle Samuel, Tod F. Stuessy, Georg Zizka, Darren M. Crayn and J. Andrew C. Smith and has published in prestigious journals such as The Plant Cell, Plant Cell & Environment and Systematic Biology.

In The Last Decade

Walter Till

35 papers receiving 1.6k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Phylogeny, adaptive radiation, and historical biogeography in Bromeliaceae: Insights from an eight‐locus plastid phylogeny

2011 389 citations Thomas J. Givnish, Michael H. J. Barfuss et al. American Journal of Botany profile →
Adaptive radiation, correlated and contingent evolution, and net species diversification in Bromeliaceae

2013 299 citations Thomas J. Givnish, Michael H. J. Barfuss et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Walter Till Austria	13	1.5k	380	291	224	121	43	1.7k
Katharina Schulte Germany	19	1.4k 0.9×	344 0.9×	379 1.3×	196 0.9×	93 0.8×	28	1.6k
Harry E. Luther United States	5	1.1k 0.7×	284 0.7×	200 0.7×	207 0.9×	73 0.6×	11	1.2k
Warren H.‏ Wagner United States	25	1.6k 1.0×	849 2.2×	252 0.9×	156 0.7×	209 1.7×	120	1.9k
Alejandro Flores‐Palacios Mexico	18	1.2k 0.8×	456 1.2×	83 0.3×	281 1.3×	75 0.6×	83	1.4k
Jan H. D. Wolf Netherlands	22	1.2k 0.8×	491 1.3×	133 0.5×	342 1.5×	104 0.9×	45	1.5k
Yasuyuki Watano Japan	25	1000 0.7×	440 1.2×	458 1.6×	205 0.9×	184 1.5×	67	1.5k
David S. Barrington United States	20	1.3k 0.8×	312 0.8×	185 0.6×	368 1.6×	143 1.2×	64	1.5k
Elizabeth L. Spriggs United States	15	720 0.5×	470 1.2×	461 1.6×	323 1.4×	38 0.3×	19	1.3k
Fábio Pinheiro Brazil	23	1.2k 0.8×	474 1.2×	505 1.7×	365 1.6×	108 0.9×	76	1.7k
Leon R. Perrie New Zealand	22	1.1k 0.7×	277 0.7×	225 0.8×	232 1.0×	111 0.9×	99	1.3k

Countries citing papers authored by Walter Till

Since Specialization

Citations

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

Fields of papers citing papers by Walter Till

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Walter Till. 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 Walter Till. The network helps show where Walter Till may publish in the future.

Co-authorship network of co-authors of Walter Till

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Barfuss, Michael H. J., et al.. (2025). The Explosive Radiation of the Neotropical Tillandsia Subgenus Tillandsia (Bromeliaceae) Has Been Accompanied by Pervasive Hybridization. Systematic Biology. 75(1). 22–38.

Leme, Elton M. C., Walter Till, Heidemarie Halbritter, & Michael H. J. Barfuss. (2025). Arachnandra, a new monotypic genus in Tillandsioideae (Bromeliaceae) from the Atlantic Forest in Brazil. Phytotaxa. 693(1). 1–32.

Leme, Elton M. C., Everton Hilo de Souza, Walter Till, et al.. (2025). Twenty Miscellaneous New Species and One New Nothogenus and Nothospecies in Brazilian Bromeliaceae. Phytotaxa. 692(1). 1–60.

Hess, Jaqueline, Luiz Augusto Cauz‐Santos, Eva M. Temsch, et al.. (2024). CAM evolution is associated with gene family expansion in an explosive bromeliad radiation. The Plant Cell. 36(10). 4109–4131. 5 indexed citations

Viruel, Juan, Margot Paris, Jaqueline Hess, et al.. (2021). Taxon‐specific or universal? Using target capture to study the evolutionary history of rapid radiations. Molecular Ecology Resources. 22(3). 927–945. 33 indexed citations

Palma‐Silva, Clarisse, et al.. (2021). Botanical history and typification in the Tillandsia ionantha complex. Taxon. 70(6). 1317–1326. 3 indexed citations

Paris, Margot, Jaqueline Hess, Michael H. J. Barfuss, et al.. (2020). Genomic footprints of repeated evolution of CAM photosynthesis in a Neotropical species radiation. Plant Cell & Environment. 43(12). 2987–3001. 14 indexed citations

Bratzel, Fabian, Juraj Paule, Elton M. C. Leme, et al.. (2020). Correction to: The low-copy nuclear gene Agt1 as a novel DNA barcoding marker for Bromeliaceae. BMC Plant Biology. 20(1). 567–567. 3 indexed citations

Bratzel, Fabian, Juraj Paule, Elton M. C. Leme, et al.. (2020). The low-copy nuclear gene Agt1 as a novel DNA barcoding marker for Bromeliaceae. BMC Plant Biology. 20(1). 111–111. 11 indexed citations

10.

Barfuss, Michael H. J., Walter Till, Elton M. C. Leme, et al.. (2016). Taxonomic revision of Bromeliaceae subfam. Tillandsioideae based on a multi-locus DNA sequence phylogeny and morphology. Phytotaxa. 279(1). 111 indexed citations

11.

Ramírez‐Morillo, Ivón M., et al.. (2016). Phylogenetics and evolution of theTillandsia utriculatacomplex (Bromeliaceae, Tillandsioideae) inferred from three plastid DNA markers and the ETS of the nuclear ribosomal DNA. Botanical Journal of the Linnean Society. 181(3). 362–390. 16 indexed citations

12.

Demaio, Pablo, Michael H. J. Barfuss, Roberto Kiesling, Walter Till, & Jorge O. Chiapella. (2011). Molecular phylogeny of Gymnocalycium (Cactaceae): Assessment of alternative infrageneric systems, a new subgenus, and trends in the evolution of the genus. American Journal of Botany. 98(11). 1841–1854. 34 indexed citations

13.

Givnish, Thomas J., Michael H. J. Barfuss, Benjamin W. van Ee, et al.. (2011). Phylogeny, adaptive radiation, and historical biogeography in Bromeliaceae: Insights from an eight‐locus plastid phylogeny. American Journal of Botany. 98(5). 872–895. 389 indexed citations breakdown →

14.

Espejo‐Serna, Adolfo, Ana Rosa López‐Ferrari, & Walter Till. (2008). Dos nuevas especies de Tillandsia (Bromeliaceae) de México. Acta Botanica Mexicana. 45–62. 2 indexed citations

15.

Barfuss, Michael H. J., Rosabelle Samuel, Walter Till, & Tod F. Stuessy. (2005). Phylogenetic relationships in subfamily Tillandsioideae (Bromeliaceae) based on DNA sequence data from seven plastid regions. American Journal of Botany. 92(2). 337–351. 152 indexed citations

16.

Till, Walter. (1999). Tillandsia boryana gand. and Tillandsia smithiana carabia (Bromeliaceae): a mystery resolved and a correction in synonymy. Harvard Papers in Botany.

17.

Till, Walter. (1959). New sayings of Jesus in the recently discovered coptic Gospel of Thomas. Bulletin of the John Rylands Library. 41(2). 446–458. 1 indexed citations

18.

Quispel, G. & Walter Till. (1956). Die gnostischen Schriften des koptischen Papyrus Berolinensis 8502. Vigiliae Christianae. 10(1). 51–51. 13 indexed citations

19.

Till, Walter. (1952). The Gnostic Apocryphon of John. The Journal of Ecclesiastical History. 3(1). 14–22. 1 indexed citations

20.

Till, Walter. (1951). Die Arzneikunde. Der Kopten. 7 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.

Explore authors with similar magnitude of impact