Robert J. Soreng

Smithsonian National Museum of Natural History

I am principally interested in grasses (fam. Poaceae), and specialize in the taxonomy of cool season grasses (Pooideae), particularly the genus Poa (ca. 500 species world-wide). Having spent 8 years conducting molecular research on relationships among grasses at family, subfamily, tribal and genus levels, I now am able to devote my time to the study these plants in the herbarium and the field, while continuing to collaborate with colleagues on molecular studies. Poa possibly has the most variation in breeding systems of any genus of plants, and I study this variation to better assess the nature of species in this genus. I also specialize in grass nomenclature and help to maintain and update the grass data in TROPICOS (Missouri Bot. Gards. taxonomic database).

Department / Division

Botany

Education

BS, Oregon State University, 1978
MS, New Mexico State Universtity, 1980
PhD, New Mexico State University, 1986

Publications

Gallaher, Timothy J., Peterson, Paul M., Soreng, Robert J., Zuloaga, Fernando O., Li, De-Zhu, Clark, Lynn G., Tyrrell, Christopher D., Welker, Cassiano A. D., Kellogg, Elizabeth A., and Teisher, Jordan K. 2022. "Grasses through space and time: an overview of the biogeographical and macroevolutionary history of Poaceae." Journal of Systematics and Evolution, https://doi.org/10.1111/jse.12857.
Gillespie, Lynn J., Soreng, Robert J., Bull, Roger D., de Lange, Peter J., and Smissen, Rob D. 2022. "Morphological and phylogenetic evidence for subtribe Cinninae and two new subtribes, Hookerochloinae and Dupontiinae (Poaceae tribe Poeae PPAM clade)." Taxon, https://doi.org/10.1002/tax.12654.
Peterson, Paul M., Wiersema, John H., Soreng, Robert J., Romaschenko, Konstantin, and Herrera Arrieta, Yolanda. 2022. "(2881) Proposal to conserve the name Triraphis (Poaceae: Chloridoideae: Triraphideae) with a conserved type." Taxon, 71, (2) 474–475. https://doi.org/10.1002/tax.12701.
Soreng, Robert J., Gillespie, Lynn J., Boudko, Ekaterina A., and Cabi, Evren. 2022. "Biogeography, timing, and life-history traits in the PPAM clade: Coleanthinae (syn. Puccinelliinae), Poinae, Alopecurinae superclade, Miliinae, and Avenulinae and Phleinae (Poaceae, Pooideae, Poeae)." Journal of Systematics and Evolution, https://doi.org/10.1111/jse.12811.
Orton, Lauren M., Barberá, Patricia, Nissenbaum, Matthew P., Peterson, Paul M., Quintanar, Alejandro, Soreng, Robert J., and Duvall, Melvin R. 2021. "A 313 plastome phylogenomic analysis of Pooideae: Exploring relationships among the largest subfamily of grasses." Molecular phylogenetics and evolution, 159 Article 107110. https://doi.org/10.1016/j.ympev.2021.107110.
Peterson, Paul M., Soreng, Robert J., Romaschenko, Konstantin, Barberá, Patricia, Quintanar, Alejandro, Aedo, Carlos, and Saarela, Jeffery M. 2021. "Phylogeny and biogeography of Calamagrostis (Poaceae: Pooideae: Poeae: Agrostidinae), description of a new genus, Condilorachia (Calothecinae), and expansion of Greeneochloa and Pentapogon (Echinopogoninae)." Journal of Systematics and Evolution, https://doi.org/10.1111/jse.12819.
Poinar, George and Soreng, Robert J. 2021. "A New Genus and Species of Grass, Eograminis balticus (Poaceae: Arundinoideae), in Baltic Amber." International journal of plant sciences, 182, (9) 808–816. https://doi.org/10.1086/716781.
Sylvester, Steven P., Soreng, Robert J., and Gilliespie, Lynn J. 2021. "Resolving páramo Poa (Poaceae): morphometric and phylogenetic analysis of the ' Cucullata complex' of north-west South America." Botanical Journal of the Linnean Society, 197, (1) 104–146. https://doi.org/10.1093/botlinnean/boab027.
Barberá, Patricia, Soreng, Robert J., Peterson, Paul M., Romaschenko, Konstantin, Quintanar, Alejandro, and Aedo, Carlos. 2020. "Molecular phylogenetic analysis resolves Trisetum (Poaceae: Pooideae: Koeleriinae) polyphyletic: Evidence for a new genus, Sibirotrisetum and resurrection of Acrospelion." Journal of Systematics and Evolution, 58, (4) 517–526. https://doi.org/10.1111/jse.12523.
Nobis, Marcin, Marciniuk, Jolanta, Marciniuk, Pawel, Wolanin, Mateusz, Kiraly, Gergely, Nowak, Arkadiusz, Paszko, Beata, Klichowska, Ewelina, Moreno-Moral, Gonzalo, Piwowarczyk, Renata, Sanchez-Pedraja, Oscar, Wrobel, Anna, Egorova, Irina N., Jun, Pavol Elias, Krivenko, Denis A., Kuzmin, Igor V., Lazkov, Georgy A., Mei, Giacomo, Nobis, Agnieszka, Olonova, Marina V., Soreng, Robert J., Stinca, Adriano, Vasjukov, Vladimir M., and Vershinin, Nikita A. 2020. "Contribution to the flora of Asian and European countries: new national and regional vascular plant records, 9." Turkish Journal of Botany, 44, (4) 455–480. https://doi.org/10.3906/bot-1908-41.

Peterson, Paul M., Romaschenko, Konstantin, Soreng, Robert J., and Valdés Reyna, Jesus. 2020. "Eriocoma valdesii, a new species from México (Poaceae, Stipeae)." PhytoKeys, 139 21–28. https://doi.org/10.3897/phytokeys.139.47373.
Peterson, Paul M., Sylvester, Steven P., Romaschenko, Konstantin, Soreng, Robert J., Barberá, Patricia, Quintanar, Alejandro, and Aedo, Carlos. 2020. "A phylogeny of species near Agrostis supporting the recognition of two new genera, Agrostula and Alpagrostis (Poaceae, Pooideae, Agrostidinae) from Europe." PhytoKeys, 167 57–82. https://doi.org/10.3897/phytokeys.167.55171.
Soreng, Robert J., Olonova, Marina V., Probatova, Nina S., and Gillespie, Lynn J. 2020. "Breeding systems and phylogeny in Poa, with special attention to Northeast Asia: the problem of Poa shumushuensis and sect. Nivicolae (Poaceae)." Journal of Systematics and Evolution, https://doi.org/10.1111/jse.12647.
Soreng, Robert J., Sylvester, Steven P., Sylvester, Mitsy D. P. V., and Clark, Vincent Ralph. 2020. "New records and key to Poa (Pooideae, Poaceae) from the Flora of Southern Africa region and notes on taxa including a diclinous breeding system in Poa binata." PhytoKeys, 165 27–50. https://doi.org/10.3897/phytokeys.165.55948.
Sylvester, Steven P., Cuta-Alarcon, Lia E., Bravo-Pedraza, William J., and Soreng, Robert J. 2020. "Agrostis and Podagrostis (Agrostidinae, Poaceae) from páramos of Boyacá, Colombia: synoptic taxonomy including a key to Colombian species." Phytokeys, (151) 107–160. https://doi.org/10.3897/phytokeys.151.50538.
Sylvester, Steven P., Peterson, Paul M., Romaschenko, Konstantin, Bravo-Pedraza, William, Cuta-Alarcon, Lia, and Soreng, Robert J. 2020. "New combinations and updated descriptions in Podagrostis (Agrostidinae, Poaceae) from the Neotropics and Mexico." PhytoKeys, 148 21–50. https://doi.org/10.3897/phytokeys.148.50042.
Sylvester, Steven P., Soreng, Robert J., Bravo-Pedraza, William, Cuta-Alarcon, Lia, and Giraldo-Cañas, Diego. 2020. "Poa (Poaceae) of Colombia: A Taxonomic Revision." Annals of the Missouri Botanical Garden, 105, (2) 232–279. https://doi.org/10.3417/2020503.
Sylvester, Steven P., Soreng, Robert J., Sylvester, Mitsy D. P., V., and Clark, Vincent Ralph. 2020. "Festuca drakensbergensis (Poaceae): A common new species in the F. caprina complex from the Drakensberg Mountain Centre of Floristic Endemism, southern Africa, with key and notes on taxa in the complex including the overlooked F. exaristata." Phytokeys, (162) 45–69. https://doi.org/10.3897/phytokeys.162.55550.
Barbera, Patricia, Quintanar, Alejandro, Peterson, Paul M., Soreng, Robert J., and Romaschenko, Konstantin. 2019. "New combinations, new names, typifications, and a new section, sect. Hispanica in Koeleria (Poeae, Poaceae)." Phytoneuron, 46 1–13.
Canavan, Susan, Meyerson, Laura A., Packer, Jasmin G., Pysek, Petr, Maurel, Noelie, Lozano, Vanessa, Richardson, David M., Brundu, Giuseppe, Canavan, Kim, Cicatelli, Angela, Cuda, Jan, Dawson, Wayne, Essl, Franz, Guarino, Francesco, Guo, Wen-Yong, van Kleunen, Mark, Kreft, Holger, Lambertini, Carla, Pergl, Jan, Skalova, Hana, Soreng, Robert J., Visser, Vernon, Vorontsova, Maria S., Weigelt, Patrick, Winter, Marten et al. 2019. "Tall-statured grasses: a useful functional group for invasion science." Biological Invasions, 21, (1) 37–58. https://doi.org/10.1007/s10530-018-1815-z.
Peterson, Paul M., Romaschenko, Konstantin, Soreng, Robert J., and Valdés Reyna, Jesus. 2019. "A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, ×Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa." PhytoKeys, 126 89–125. https://doi.org/10.3897/phytokeys.126.34096.
Peterson, Paul M., Soreng, Robert J., Romaschenko, Konstantin, Barberá, Patricia, Quintanar, Alejandro, and Aedoe, Carlos. 2019. "New Combinations and New Names in American Cinnagrostis, Peyritschia, And Deschampsia, and Three New Genera: Greeneochloa, Laegaardia and Paramochloa (Poeae, Poaceae)." Phytoneuron, 39 1–23. https://doi.org/10.5281/zenodo.3497446.
Sylvester, Steven P., Soreng, Robert J., Bravo-Pedraza, William, Cuta-Alarcon, Lia, Giraldo-Cañas, Diego, Aguilar-Cano, Jose, and Peterson, Paul M. 2019. "Páramo Calamagrostis s.l. (Poaceae): An updated list and key to the species known or likely to occur in páramos of NW South America and southern Central America including two new species, one new variety and five new records for Colombia." PhytoKeys, 122 29–78. https://doi.org/10.3897/phytokeys.122.33032.
Sylvester, Steven P., Soreng, Robert J., and Giraldo-Canas, Diego. 2019. "Podagrostis colombiana sp. nov. (Poaceae): a new genus record and species for Colombia." Kew Bulletin, 74, (2) 25–25. https://doi.org/10.1007/s12225-019-9814-5.
Finot, Victor L., Soreng, Robert J., Giussani, Liliana M., and Muñoz, Romina G. 2018. "A multivariate morphometric delimitation of species boundaries in the South American genus Nicoraepoa (Poaceae: Pooideae: Poeae)." Plant Systematics and Evolution, 304, (5) 679–697. https://doi.org/10.1007/s00606-018-1499-y.
Gillespie, Lynn J., Soreng, Robert J., Cabi, Evren, and Amiri, Neda. 2018. "Phylogeny and taxonomic synopsis of Poa subgenus Pseudopoa (including Eremopoa and Lindbergella) (Poaceae, Poeae, Poinae)." PhytoKeys, (111) 69–101. https://doi.org/10.3897/phytokeys.111.28081.
Hardion, L., Peterson, Paul M., and Soreng, Robert J. 2018. "Validation of Pratochloa (Poaceae: Arundinoideae) and a new combination, P. walteri based on Eragrostis walteri." Phytoneuron, 2018-31 1–3.
Peterson, Paul M. and Soreng, Robert J. 2018. "Poa laegaardiana, a new species from Ecuador (Poaceae, Pooideae, Poeae, Poinae)." PhytoKeys, 100 141–147. https://doi.org/10.3897/phytokeys.100.25387.
Peterson, Paul M., Soreng, Robert J., Phillips, Sylvia M., and Wiersema, John H. 2018. "(2620) Proposal to reject the name Poa amabilis (Eragrostis amabilis) (Poaceae)." Taxon, 67, (3) 644. https://doi.org/10.12705/673.25.
Peterson, Paul M., Soreng, Robert J., and Romaschenko, K. 2018. "Festuca floribunda, a new combination for Dielsiochloa (Poaceae: Pooideae: Poeae: Loliodinae: Loliinae)." Phytoneuron, 2018-32 1–4.
Saarela, Jeffery M., Burke, Sean V., Wysocki, William P., Barrett, Matthew D., Clark, Lynn G., Craine, Joseph M., Peterson, Paul M., Soreng, Robert J., Vorontsova, Maria S., and Duvall, Melvin R. 2018. "A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions." Peerj, 6 e4299–e4299. https://doi.org/10.7717/peerj.4299.
Soreng, Robert J. and Gillespie, Lynn J. 2018. "Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA." PhytoKeys, 110 101–121. https://doi.org/10.3897/phytokeys.110.27750.
Soreng, Robert J. and Simmons, Roderick H. 2018. "Noteworthy Collections: Maryland, Virginia, and North Carolina [Poa iconia newly reported from North America]." Castanea: The Journal of the Southern Appalachian Botanical Society, 83, (2) 270–271. https://doi.org/10.2179/18-171.
Cabi, Evren, Soreng, Robert J., and Gillespie, Lynn Judith. 2017. "Taxonomy of Poa jubata and a new section of the genus (Poaceae)." Turkish Journal of Botany, 41 404–415. https://doi.org/10.3906/bot-1611-28.
Cabi, Evren, Soreng, Robert J., Gillespie, Lynn Judith, and Boudko, Ekaterina. 2017. "Alopecurus goekyigitiana (Poaceae, subtribe Alopecurinae sensu stricto),a new species from Turkey based on morphological and molecular investigation." Turkish Journal of Botany, 41 189–199. https://doi.org/10.3906/bot-1606-51.
Saarela, Jeffery M., Bull, Roger D., Paradis, Michel J., Ebata, Sharon N., Peterson, Paul M., Soreng, Robert J., and Paszko, Beata. 2017. "Molecular phylogenetics of cool-season grasses in the subtribes Agrostidinae, Anthoxanthinae, Aveninae, Brizinae, Calothecinae, Koeleriinae and Phalaridinae (Poaceae, Pooideae, Poeae, Poeae chloroplast group 1)." PhytoKeys, 87 1–139. https://doi.org/10.3897/phytokeys.87.12774.
Soreng, Robert J., Gillespie, L. J., and Consaul, L. L. 2017. "Taxonomy of the Poa laxa group, including two new taxa from Arctic Canada and Greenland, and Oregon, and a re-examination of P . sect. Oreinos (Poaceae)." Nordic Journal of Botany, 35, (5) 513–538. https://doi.org/10.1111/njb.01507.
Soreng, Robert J., Peterson, Paul M., Romaschenko, Konstantin, Davidse, Gerrit, Teisher, Jordan K., Clark, Lynn G., Barberá, Patricia, Gillespie, Lynn J., and Zuloaga, Fernando O. 2017. "A worldwide phylogenetic classification of the Poaceae (Gramineae) II: An update and a comparison of two 2015 classifications." Journal of Systematics and Evolution, 55, (4) 259–290. https://doi.org/10.1111/jse.12262.
Cabi, Evren and Soreng, Robert J. 2016. "Two new records and one confirmation of the genus Poa L. (Poaceae) for the Flora of Turkey." Turkish Journal of Botany, 40, (4) 439–445. https://doi.org/10.3906/bot-1509-27.
Cabi, Evren, Soreng, Robert J., Gillespie, Lynn, and Amiri, Neda. 2016. "Poa densa (Poaceae), an overlooked Turkish steppe grass, and the evolution of bulbs in Poa." Willdenowia, 46, (2) 201–211. https://doi.org/10.3372/wi.46.46201.
Giussani, Liliana M., Gillespie, Lynn J., Scataglini, M. A., Negritto, María A., Anton, Ana M., and Soreng, Robert J. 2016. "Breeding system diversification and evolution in American Poa supersect. Homalopoa (Poaceae: Poeae: Poinae)." Annals of Botany, 118, (2) 281–303. https://doi.org/10.1093/aob/mcw108.
Peterson, Paul M. and Soreng, Robert J. 2016. "A revision of Poa subsection Aphanelytrum (Poaceae, Pooideae, Poaeae, Poinae); and a new species, Poa auriculata." PhytoKeys, 63 107–125. https://doi.org/10.3897/phytokeys.63.8198.
Sylvester, Steven P., Soreng, Robert J., Peterson, Paul M., and Sylvester, Mitsy D. P. V. 2016. "An updated checklist and key to the open-panicled species of Poa L. (Poaceae) in Peru including three new species, Poa ramoniana, Poa tayacajaensis, and Poa urubambensis." PhytoKeys, 65 57–90. https://doi.org/10.3897/phytokeys.65.7024.
Cabi, Evren, Soreng, Robert J., Çıngay, Burçin, and Karabacak, Ersin. 2015. "A new species of Bellardiochloa , B. doganiana (Poaceae), from the Taurus Mountains of Turkey." Phytotaxa, 205, (2) 123–128. https://doi.org/10.11646/phytotaxa.205.2.6.
Saarela, Jeffery M., Wysocki, William P., Barrett, Craig F., Soreng, Robert J., Davis, Jerrold I., Clark, Lynn G., Kelchner, Scot A., Pires, J. C., Edger, Patrick P., Mayfield, Dustin R., and Duvall, Melvin R. 2015. "Plastid phylogenomics of the cool-season grass subfamily: Clarification of relationships among early-diverging tribes." AoB Plants, 7 1–72. https://doi.org/10.1093/aobpla/plv046.
Soreng, Robert J., Gillespie, Lynn J., Koba, Hidehisa, Boudko, Ekaterina, and Bull, Roger D. 2015. "Molecular and morphological evidence for a new grass genus, Dupontiopsis (Poaceae tribe Poeae subtribe Poinae s.l.), endemic to alpine Japan, and implications for the reticulate origin of Dupontia and Arctophila within Poinae s.l." Journal of Systematics and Evolution, 53, (2) 138–162. https://doi.org/10.1111/jse.12146.
Soreng, Robert J., Peterson, Paul M., Romaschenko, Konstantin, Davidse, Gerrit, Zuloaga, Fernando O., Judziewicz, Emmet J., Filgueiras, Tarciso S., Davis, Jerrold I., and Morrone, Osvaldo. 2015. "A worldwide phylogenetic classification of the Poaceae (Gramineae)." Journal of Systematics and Evolution, 53, (2) 117–137. https://doi.org/10.1111/jse.12150.
Cialdella, Ana M., Sede, Silvana M., Romaschenko, Konstantin, Peterson, Paul M., Soreng, Robert J., Zuloaga, Fernando O., and Morrone, O. 2014. "Phylogeny of Nassella (Stipeae, Pooideae, Poaceae) based on analyses of chloroplast and nuclear ribosomal DNA and morphology." Systematic Botany, 39, (3) 814–828. https://doi.org/10.1600/036364414X681419.
Peterson, Paul M., Romaschenko, Konstantin, and Soreng, Robert J. 2014. "A laboratory guide for generating DNA barcodes in grasses: a case study of Leptochloa s.l. (Poaceae: Chloridoideae)." Webbia, 69, (1) 1–12. https://doi.org/10.1080/00837792.2014.927555.
Romaschenko, Konstantin, Garcia-Jacas, Nuria, Peterson, Paul M., Soreng, Robert J., Vilatersana, Roser, and Susanna, Alfonso. 2014. "Miocene–Pliocene speciation, introgression, and migration of Patis and Ptilagrostis (Poaceae: Stipeae)." Molecular Phylogenetics and Evolution, 70 244–259. https://doi.org/10.1016/j.ympev.2013.09.018.
Paszko, Beata and Soreng, Robert J. 2013. "Species delimitation and name application in Deyeuxia abnormis, Agrostis zenkeri, A. pleiophylla and related taxa (Poaceae: Agrostidinae)." Phytotaxa, 111, (1) 1–26. https://doi.org/10.11646/phytotaxa.111.1.1.
Giussani, L. M., Anton, Ana M., Negritto, M. A., Romanutti, A. A., and Soreng, Robert J. 2012. "Poa L." In Monocotyledoneae. Poaceae: Aristiodoideae a Pharoideae. Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., editors. 284–339. Córdoba: Graficamenta Ediciones. 3 in Flora Argentina: Flora Vascular de la República Argentina.
Peterson, Paul M., Soreng, Robert J., and Smith, S. F. 2012. "Poaceae." In Catalogue of seed plants of the West Indies. Acevedo-Rodríguez, Pedro and Strong, Mark T., editors. 714–766. Washington, DC: Smithsonian Institution. In Smithsonian Contributions to Botany, 98. (https://doi.org/10.5479/si.0081024X.98.1)
Refulio-Rodriguez, N., Columbus, J. T., Gillespie, L. J., Peterson, Paul M., and Soreng, Robert J. 2012. "Molecular phylogeny of Dissanthelium (Poaceae: Pooideae) and its taxonomic implications." Systematic Botany, 37, (1) 122–133. https://doi.org/10.600/036364412X616701.
Romaschenko, Konstantin, Peterson, Paul M., Soreng, Robert J., Garcia-Jacas, N., Futorna, O., and Susanna, Alfonso. 2012. "Systematics and evolution of the needle grasses (Poaceae: Pooideae: Stipeae) based on analysis of multiple chloroplast loci, ITS, and lemma micromorphology." Taxon, 61, (1) 18–44.
Soreng, Robert J. 2012. "Clave de los Generos de Pooideae." In Monocotyledoneae. Poaceae: Pooideae. Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., editors. 25–31. Córdoba: Graficamenta Ediciones. 3 in Flora Argentina: Flora Vascular de la República Argentina.
Soreng, Robert J. 2012. "Tribu Poeae R. Br." In Monocotyledoneae. Poaceae: Pooideae. Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., editors. 97–102. Córdoba: Graficamenta Ediciones. 3 in Flora Argentina: Flora Vascular de la República Argentina.
Soreng, Robert J. and Gillespie, L. J. 2012. "Nicoraepoa." In Monocotyledoneae. Poaceae: Pooideae. Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., editors. 270–277. Córdoba: Graficamenta Ediciones. 3 in Flora Argentina: Flora Vascular de la República Argentina.
Soreng, Robert J. and Peterson, Paul M. 2012. "Revision of Poa L. (Poaceae, Pooideae, Poeae, Poinae) in Mexico: new records, re-evaluation of P. ruprechtii, and two new species, P. palmeri and P. wendtii." PhytoKeys, 15 1–104. https://doi.org/10.3897/phytokeys.15.3084.
Peterson, Paul M., Soreng, Robert J., Styer, D., Neubauer, D., Morgan, R., and Yadon, V. 2011. "Agrostis lacuna-vernalis (Pooideae: Poeae: Agrostidinae), a new species from California." Journal of the Botanical Research Institute of Texas, 5, (2) 421–426.
Romaschenko, Konstantin, Peterson, Paul M., Soreng, Robert J., Futorna, O., and Susanna, A. 2011. "Phylogenetics of Piptatherum s.l. (Poaceae: Stipeae): evidence for a new genus, Piptatheropsis, and resurrection of Patis." Taxon, 60, (6) 1703–1716.
Soreng, Robert J. and Fish, Lyn. 2011. "Catabrosa versus Colpodium (Poaceae: Poeae) in southern Africa, with a key to these genera and their species in Africa." Kew Bulletin, 66, (1) 101–110. https://doi.org/10.1007/s12225-011-9267-y.
Davidse, Gerrit, Soreng, Robert J., and Peterson, Paul M. 2010. "Poa unispiculata, a new gynodioecious species of cushion grass from Peru with a single spikelet per inflorescence (Poaceae: Pooideae: Poeae: Poinae)." Journal of the Botanical Research Institute of Texas, 4, (1) 37–44.
Davis, Jerrold I. and Soreng, Robert J. 2010. "Migration of endpoints of two genes relative to boundaries between regions of the plastid genome in the grass family (Poaceae)." American Journal of Botany, 97, (5) 874–892. https://doi.org/10.3732/ajb.0900228.
Gillespie, Lynn J., Soreng, Robert J., Paradis, L. Michel, and Bull, Roger D. 2010. "Phylogeny and reticulation in Poinae subtribal complex based on nrITS, ETS, and trnTLF data." In Diversity, Phylogeny, and Evolution in the Monocotyledons. Seberg, O., Peterson, G., Barfod, A., and Davis, J. I., editors. 589–617. Aarhus: Aarhus University Press.
Romaschenko, Konstantin, Peterson, Paul M., Soreng, Robert J., Garcia-Jacas, N., and Susanna, A. 2010. "Phylogenetics of Stipeae (Poaceae: Pooideae) based on plastid and nuclear DNA sequences." In Diversity, phylogeny, and evolution in the Monocotyledons. Seberg, O., Petersen, G., Barfod, A. S., and Davis, J. I., editors. 511–537. Aarhus, Denmark: Aarhus University Press.
Saarela, Jeffrey M., Liu, Qing, Peterson, Paul M., Soreng, Robert J., and Paszko, Beata. 2010. "Phylogenetics of the grass 'Aveneae-type plastid DNA clade' (Poaceae: Pooideae, Poeae) based on plastid and nuclear ribosomal DNA sequence data." In Diversity, phylogeny, and evolution in the Monocotyledons. Seberg, O., Petersen, G., Barfod, A. S., and Davis, J. I., editors. 557–587. Aarhus, Denmark: Aarhus University Press.
Soreng, Robert J. 2010. "Coleataenia Griseb. (1879): The correct name for Sorengia Zuloaga & Morrone (2010) (Poaceae: Paniceae)." Journal of the Botanical Research Institute of Texas, 4, (2) 691–692.
Soreng, Robert J., Bull, Roger D., and Gillespie, Lynn J. 2010. "Phylogeny and reticulation in Poa based on plastid trnTLF and nrITS sequences with attention to diploids." In Diversity, Phylogeny, and Evolution in the Monocotyledons. Seberg, O., Peterson, G., Barfod, A., and Davis, J. I., editors. 619–643. Aarhus: Aarhus University Press.
Soreng, Robert J. and Peterson, Paul M. 2010. "Poa ramifer (Poaceae: Pooideae: Poeae: Poinae), a new aerially branching gynomonoecious species from Peru." Journal of the Botanical Research Institute of Texas, 4, (2) 587–594.
Catalan, P., Soreng, Robert J., and Peterson, Paul M. 2009. "Festuca aloha and F. molokaiensis (Poaceae): Loliinae), two new species from Hawai'i." Journal of the Botanical Research Institute of Texas, 3, (1) 51–58.
Davidse, G., Soreng, Robert J., and Peterson, Paul M. 2009. "Agrostopoa (Poaceae, Pooideae, Poeae, Poinae), a new genus with three species from Colombia." Novon, 23, (1) 32–40. https://doi.org/10.3417/2007132.
Gillespie, Lynn J., Soreng, Robert J., and Jacobs, Surrey W. L. 2009. "Phylogenetic relationships of Australian Poa (Poaceae: Poinae), including molecular evidence for two new genera, Saxipoa and Sylvipoa." Australian Systematic Botany, 22, (6) 413–436. https://doi.org/10.1071/SB09016.
Soreng, Robert J. 2009. "8.10 Poa L." In Grasses of the Intermountain Region. Anderton, L. K. and Barkworth, Mary E., editors. 108–135. Logan, Utah: Intermountain Herbarium.
Soreng, Robert J., Gillespie, Lynn J., and Jacobs, Surrey W. L. 2009. "Saxipoa and Sylvipoa -- two new genera and a new classification for Australian Poa (Poaceae: Poinae)." Australian Systematic Botany, 22, (6) 401–412. https://doi.org/10.1071/SB09003.
Gillespie, L. J., Soreng, Robert J., Bull, R. D., Jacobs, S. W. L., and Refulio-Rodriguez, N. F. 2008. "Phylogenetic relationships in subtribe Poinae (Poaceae, Poeae) based on nuclear ITS and plastid trnT-trnL-trnF sequences." Botany, 86, (8) 938–967. https://doi.org/10.1139/B08-076.
Jacobs, Surrey W. L., Gillespie, Lynn J., and Soreng, Robert J. 2008. "New combinations in Hookerochloa and Poa (Gramineae)." Telopea, 12, (2) 273–278.
Romaschenko, Konstantin, Peterson, Paul M., Soreng, Robert J., Garcia-Jacas, N., Futorna, O., and Susanna, A. 2008. "Molecular phylogenetic analysis of the American Stipeae (Poaceae) resolves Jarava sensu lato polyphyletic: Evidence for a new genus, Pappostipa." Journal of the Botanical Research Institute of Texas, 2, (1) 165–192.
Soreng, Robert J. and Peterson, Paul M. 2008. "New records of Poa L. (Poaceae) and Poa pfisteri: a new species endemic to Chile." Journal of the Botanical Research Institute of Texas, 2, (2) 847–859.
Davis, J. I. and Soreng, Robert J. 2007. "A preliminary phylogenetic analysis of the grass subfamily Pooideae (Poaceae), with attention to structural features of the plastid and nuclear genomes, including an intron loss in GBSSI." Aliso, 23 335–348.
Gillespie, Lynn J., Archambault, Annie, and Soreng, Robert J. 2007. "Phylogeny of Poa (Poaceae) based on trnT-trnF sequence data: major clades and basal relationships." Aliso, 23 420–434.
Peterson, Paul M. and Soreng, Robert J. 2007. "Systematics of California grasses (Poaceae)." In California grasslands: ecology and management. Stromberg, M. R., Corbin, J. D., and D'Antonio, C. M., editors. 7–20. Berkeley: University of California Press.
Sanchez Vega, I., Peterson, Paul M., Soreng, Robert J., and Laegarrd, S. 2007. "Aphanelytrum peruvianum (Poaceae: Poinae): a new species from Peru." Journal of the Botanical Research Institute of Texas, 1, (2) 841–845.
Soreng, Robert J. 2007. "Poa L." In Manual of Grasses for North America. Barkworth, Mary E., Anderton, L. K., Capels, K. M., Long, S., and Piep, M. B., editors. 112–141, 396-405, 521-523. Logan: Intermountain Herbarium and Utah State University Press.
Soreng, Robert J. 2007. "Poa L." In Flora of North America, Poaceae, part 1, vol. 24.. Barkworth, Mary E., Capels, K. M., Long, S. L., and Piep, M. B., editors. 486–601. New York, Oxford: Oxford University Press.
Soreng, Robert J., Davis, J. I., and Voionmaa, M. A. 2007. "A phylogenetic analysis of Poaceae tribe Poeae sensu lato based on morphological characters and sequence data from three plastid-encoded genes: evidence for reticulation, and a new classification for the tribe." Kew Bulletin, 62, (3) 425.
Soreng, Robert J. and Gillespie, L. J. 2007. "Nicoraepoa (Poaceae, Poeae), a new South American genus based on Poa subgenus Andinae, and emendation of Poa section Parodiochloa of the sub-Antarctic islands." Annals of the Missouri Botanical Garden, 94, (4) 821–849. https://doi.org/10.3417/0026-6493(2007)94[821:NPPANS]2.0.CO.
Liu, L., Zhu, G. H., Soreng, Robert J., and Olonova, M. V. 2006. "Poa." In Flora of China: Poaceae, Volume 22. Wu, Z. Y., Raven, Peter H., and Hong, De-Yuan, editors. 257–309. Science Press and Missouri Botanical Garden Press.
Peterson, Paul M., Soreng, Robert J., and Arrieta, Y. Herrera. 2006. "Poa matri-occidentalis (Poaceae: Pooideae: Poeae: Poinae), a new species from Mexico." SIDA, Contributions to Botany, 22, (2) 905–914.
Wu, Z. L., Lu, S. L., Liu, L., Zhu, G. H., Chen, S. L., Chen, X., Phillips, S. M., Soreng, Robert J., Aiken, S. G., Tzvelev, N. N., and Olonova, M. V. 2006. "Tribe Poeae." In Flora of China: Poaceae, Volume 22. Wu, Z. Y., Raven, Peter H., and Hong, De-Yuan, editors. 224–316.
Finot, V. L., Peterson, Paul M., Soreng, Robert J., and Zuloaga, F. O. 2005. "A revision of Trisetum and Graphephorum (Poaceae: Pooideae: Aveninae) in North America north of Mexico." SIDA, Contributions to Botany, 21, (3) 1419–1453.
Finot, V. L., Peterson, Paul M., Zuloaga, F. O., Soreng, Robert J., and Matthei, O. 2005. "A revision of Trisetum (Poaceae: Pooideae Aveninae) in South America." Annals of the Missouri Botanical Garden, 92, (4) 533–568.
Gillespie, L. J. and Soreng, Robert J. 2005. "A phylogenetic analysis of the bluegrass genus Poa based on cpDNA restriction site data." Systematic Botany, 30, (1) 84–105.
Peterson, Paul M., Soreng, Robert J., and Wu, Z. L. 2005. "Ptilagrostis luquensis (Poaceae: Stipeae: Stipinae), a new species from China." SIDA, Contributions to Botany, 21, (3) 1355–1362.
Soreng, Robert J. 2005. "Miscellaneous Chromosome Number Reports for POA (Poaceae) in North America." SIDA, Contributions to Botany, 21, (4) 2195–2203.
Soreng, Robert J. 2005. "Micellaneous chromosome number reports for Poa L. (Poaceae) in North America." SIDA, Contributions to Botany, 21, (4) 2195–2203.
Soreng, Robert J. and Olonova, M. V. 2005. "On the distribution of the rare species Poa veresczaginii Tzvelev." Systematiceskie Zametki [Tomsk], 95 32–34.
Finot, V. L., Peterson, Paul M., Soreng, Robert J., and Zuloaga, F. O. 2004. "A revision of Trisetum, Peyritschia, and Sphenopholis (Poaceae: Pooideae: Aveninae) in Mexico and Central America." Annals of the Missouri Botanical Garden, 91 1–30.
Peterson, Paul M., Soreng, Robert J., and Valdes-Reyna, J. 2004. "Calamagrostis coahuilensis and C. divaricata (Poaceae: Pooideae: Agrostidinae), two new species from Mexico." SIDA, Contributions to Botany, 21, (1) 311–320.
Saltonstall, Kristin, Peterson, Paul M., and Soreng, Robert J. 2004. "Recognition of Phragmites australis subsp. americanus (Poaceae: Arunidnoideae) in North America: evidence from morphological and genetic analyses." SIDA, Contributions to Botany, 21, (2) 683–692.
Saarela, J. M., Peterson, Paul M., Soreng, Robert J., and Chapman, R. E. 2003. "A taxonomic revision of the eastern North American and eastern Asian disjunct genus Brachyelytrum (Poaceae): evidence from morphology, phytogeography and AFLPs." Systematic Botany, 28 674–692.
Soreng, Robert J., Giussani, L. M., and Negritto, M. 2003. "Poa L." Contributions from the United States National Herbarium, 48 505–580. (Catalogue of New World Grasses)
Soreng, Robert J. and Keil, D. 2003. "Sequentially adjusted sex-ratios in gynomonoecism, and Poa diaboli (Poaceae), a new species from California." Madroño, 50, (4) 300–306.
Soreng, Robert J., Peterson, Paul M., Davidse, G., Judziewicz, E. J., Zuloaga, F. O., Filgueiras, T. S., and Morrone, O. 2003. "Catalogue of New World grasses (Poaceae): IV. subfamily Pooideae." Contributions from the United States National Herbarium, 48 1–730.
Zuloaga, Fernando O., Morrone, Osvaldo, Davidse, Gerrit, Filgueiras, Tarciso S., Peterson, Paul M., Soreng, Robert J., and Judziewicz, Emmet J. 2003. "Catalogue of New World grasses (Poaceae): III. subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae." Contributions from the United States National Herbarium, 46 1–662.
Johnson, R. C., Johnston, W. J., Golob, C. T., Nelson, M. C., and Soreng, Robert J. 2002. "Characterization of the USDA Poa pratensis collection usingRAPD markers and agronomic descriptors." Genetic Resources and Crop Evolution, 49, (4) 351–363.
Soreng, Robert J. 2002. "Poa L." In The Jepson Desert Manual: Vascular Plants of Southeastern California. Baldwin, Bruce G., Boyd, S., Ertter, B. J., Patterson, R. W., Rosatti, T. J., and Wilkin, D. H., editors. 593–595, 597. Berkeley: University of California Press.
Gandhi, K. N., Wiersema, John H., and Soreng, Robert J. 2001. "(1479) Proposal to conserve the name Bouteloua gracilis (Kunth) Griffiths against B. gracilis Vasey (Poaceae)." Taxon, 50, (2) 573–575.
Grass Phylogeny Working Group, Barker, N. P., Clark, L. G., Davis, J. I., Duvall, M. R., Guala, Gerald F., Hsiao, C., Kellogg, E. A., Linder, H. P., Mason-Gamer, R., Mathews, S., Simmons, M. P., Soreng, Robert J., and Spangler, R. 2001. "Phylogeny and subfamilial classification of the grasses (Poaceae)." Annals of the Missouri Botanical Garden, 88, (3) 373–457.
Peterson, Paul M., Soreng, Robert J., Davidse, G., Filgueiras, T. S., Zuloaga, F. O., and Judziewicz, E. J. 2001. "Catalogue of New World grasses (Poaceae): II. subfamily Chloridoideae." Contributions from the United States National Herbarium, 41 1–255.
Soreng, Robert J. 2001. "Poa." In Illustrated Flora of British Columbia. Douglas, G. W., Meidinger, D., and Pojar, J., editors. 224–257. Ministry of Sustainable Resource Management.
Soreng, Robert J. 2001. "A new species of Poa L. (Poaceae) from Baja California, Mexico." Madroño, 48, (2) 123–127.
Soreng, Robert J., Terrell, Edward E., Wiersema, John H., and Darbyshire, S. J. 2001. "Proposal to conserve the name Schedonorus arundinaceus (Schreb.) Dumort. against Schedonorus arundinaceus Roem. & Schult. (Poaceae: Poeae)." Taxon, 50 915–917.
Judziewicz, E. J., Soreng, Robert J., Davidse, G., Peterson, Paul M., Filgueiras, T. S., and Zuloaga, F. O. 2000. "Catalogue of New World grasses (Poaceae): I. subfamilies Anomochlooideae, Bambusoideae, Ehrhartoideae, and Pharoideae." Contributions from the United States National Herbarium, 39 1–128.
Soreng, Robert J. 2000. "Apomixis and amphimixis comparative biogeography: a study in Poa (Poaceae)." In Grasses: Systematics and Evolution: International Symposium on Grass Systematis and Evolution (3rd: 1998). Jacobs, W. L. and Everett, J., editors. 294–306.
Soreng, Robert J. and Davis, J. I. 2000. "Phylogenetic structure in Poaceae subfamily Pooideae as inferred from molecular and morphological characters: misclassification versus reticulation." In Grasses: Systematics and Evolution (International Symposium on Grass Systematics and Evolution (3rd: 1998). Jacobs, W. L. and Everett, J., editors. 61–74.
Peterson, Paul M., Terrell, Edward E., Uebel, E. C., Davis, C. A., Scholz, H., and Soreng, Robert J. 1999. "Oplismenus hirtellus subspecies undulatifolious, A new record for North America." Castanea: The Journal of the Southern Appalachian Botanical Society, 64, (2) 201–202.
Soreng, Robert J. and Barrie, F. R. 1999. "(1391) Proposal to conserve the name Poa pratensis (Poaceae) with a conserved type." Taxon, 48, (1) 157–159.
Grass Phylogeny Working Group, Barker, N. P., Clark, L. G., Davis, J. I., Duvall, M. R., Guala, Gerald F., Hsiao, C., Kellogg, E. A., Linder, H. P., Mason-Gamer, R., Mathews, S., Soreng, Robert J., and Spangler, R. 1998. "A Phylogeny of the Grass Family (Poaceae), as Inferred from Eight Cheracter Sets." In Grasses: Systematics and Evolution: International Symposium on Grass Systematics and Evolution (3rd: 1998). Jacobs, W. L. and Everett, J., editors. 3–7.
Peterson, Paul M., Soreng, Robert J., and Davidse, G. 1998. "Proposal to conserve the name Elionurus (Poaceae, Andropogoneae) with that spelling." Taxon, 47 737–738.
Soreng, Robert J. 1998. "An infrageneric classification for Poa in North America, and other notes on sections, species, and subspecies of Poa, Puccinellia, and Dissanthelium (Poaceae: Poeae)." Novon, 8, (2) 187–202.
Soreng, Robert J. and Davis, J. I. 1998. Phylogenetics and Character Evolution in the Grass Family (Poaceae): Silmultaneous Analysis of Morphological and Chloroplast DNA Restriction Site Character Sets. The New York Botanical Garden.
Soreng, Robert J. and Davis, J. I. 1998. "Phylogenetics and character evolution in the grass family (Poaceae): simultaneous analysis of morphological and chloroplast DNA restriction site character sets." Botanical review, 64, (1) 1–85.
Soreng, Robert J. and Terrell, Edward E. 1998. "Taxonomic notes on Schedonorus, a segregate genus from Festuca or Lolium, with new nothogenus × Schedololium and new combinations." Phytologia, 83, (2) 84–86.
Soreng, Robert J., Hein, P., and Scholz, H. 1997. "Poa akmanii, and new species from Turkey." Willdenowia, 27 195–198.
Soreng, Robert J., Peterson, Paul M., and Annable, C. R. 1995. Trinius Herbarium, Kamarov Botanical Institute, St. Petersburg, Guide to the microform collection. Inter Documentation Company BT-16, Norman Ross Publishing.
Soreng, Robert J., Peterson, Paul M., and Annable, C. R. 1995. Catalogue of the C. B. Trinius Gramineae Herbarium.
Choo, M. K., Soreng, Robert J., and Davis, J. I. 1994. "Phylogenetic Relationships Among Puccinellia and Allied Genera of Poaceae as Inferred from Chloroplast DNA Restriction Site Variation." American Journal of Botany, 81, (1) 119–126.
Meng, Keong Choo, Soreng, Robert J., and Davis, J. I. 1994. "Phylogenetic relationships among Puccinellia and allied genera as inferred from chloroplast DNA restriction site variation." American Journal of Botany, 81 119–126.
Soreng, Robert J. 1994. "Poa L." In The Vascular Plants of British Columbia, part 4. Douglas, G. D., Straley, G. B., and Meidinger, D., editors. 129–138.
Davis, J. I., Frohlich, M. W., and Soreng, Robert J. 1993. "Cladistic characters and cladogram stability." Systematic Botany, 18 188–196.
Davis, J. I. and Soreng, Robert J. 1993. "Phylogenetic Structure in the Grass Family (Poaceae) as Inferred from Chloroplast DNA Restriction Site Variation." American Journal of Botany, 80, (12) 1444–1454.
Soreng, Robert J. 1993. "Poa L." In The Jepson Manual, Higher Plants of California. Hickman, J. C., editor. 1284–1291. University of California Press.
Doyle, J. J., Davis, J. I., Soreng, Robert J., Garvin, D., and Anderson, M. J. 1992. "Chloroplast DNA inversions and the origin of the grass family (Poaceae)." Proceedings of the National Academy of Sciences of the United States of America, 89 7722–7726.
Soreng, Robert J. 1991. "Notes on the new subspecific taxa and hybrids in North America Poa (Poaceae)." Phytologia, 71 390–413.
Soreng, Robert J. 1991. "Systematics of the Poa L. group "Epiles" (Poaceae)." Systematic Botany, 16 507–528.
Soreng, Robert J. and Cope, E. A. 1991. "On the taxonomy of cultivated species of the Chrysanthemum genus complex (Anthemideae: Compositae)." Baileya, 23 145–165.
Soreng, Robert J. 1990. "Chloroplast-DNA Phylogenetics and Biogeography in a Reticulating Group: Study in Poa (Poaceae)." American Journal of Botany, 77, (11) 1383–1400.
Soreng, Robert J. 1990. "A phylogenetic analysis of chloroplast DNA restriction site variation in Poaceae subfamily Pooideae." Plant Systematics and Evolution, 172 83–97.
Soreng, Robert J. and Luckow, M. 1990. The Hortus Source List. L. H. Bailey, Cornell University.
Soreng, Robert J. and Devender, T. Van. 1989. "Late Quaternary fossils of Poa fendleriana (muttongrass): Holocene expansions of apomicts." Southwestern Naturalist, 34, (1) 35–45.
Allred, K. W., Hatch, S. L., and Soreng, Robert J. 1987. "Verified checklist of the grasses of New Mexico." New Mexico State University Agricultural Experimental Station Research Report, 579 1–47.
Soreng, Robert J. 1985. "Poa L. in New Mexico, with a key to middle and southern Rocky Mountain species (Poaceae)." Great Basin Naturalist, 45 395–422.
Soreng, Robert J. 1984. "Noteworthy collections: Arizona, New Mexico, and Wyoming." Madroño, 31 123, 126–123, 127.
Soreng, Robert J. 1984. "Ipomopsis pinnata (Polemoniaceae) in the United States." Madroño, 31 189–190.
Soreng, Robert J. and Spellenberg, R. W. 1984. "An unusual new Chaetopappa (Asteraceae: Astereae) from New Mexico." Systematic Botany, 9 1–5.
Soreng, Robert J. and Hatch, S. L. 1983. "A comparison of Poa Tracyi and Poa occidentalis." SIDA, Contributions to Botany, 10 123–141.
Soreng, Robert J. and Spellenberg, R. W. 1981. "Noteworthy collections: Ipomoea egregia, Stellaria nitens." Madroño, 28 87–88.

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