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

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
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, edited by Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., 284-339. Graficamenta Ediciones.
Peterson, Paul M., Soreng, Robert J., and Smith, S. F. 2012. "Poaceae." in Catalogue of seed plants of the West Indies, edited by Acevedo-Rodríguez, Pedro and Strong, Mark T., 714-766. Smithsonian Institution.
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, edited by Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., 25-31. Graficamenta Ediciones.
Soreng, Robert J. 2012. "Tribu Poeae R. Br." in Monocotyledoneae. Poaceae: Pooideae, edited by Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., 97-102. Graficamenta Ediciones.
Soreng, Robert J. and Gillespie, L. J. 2012. "Nicoraepoa." in Monocotyledoneae. Poaceae: Pooideae, edited by Zuloaga, Fernando O., Rúgolo de Agrasar, Zulma E., and Anton, Ana M., 270-277. Graficamenta Ediciones.
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, edited by Seberg, O., Peterson, G., Barfod, A., and Davis, J. I., 589-617. 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, edited by Seberg, O., Petersen, G., Barfod, A. S., and Davis, J. I., 511-537. 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, edited by Seberg, O., Petersen, G., Barfod, A. S., and Davis, J. I., 557-587. 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, edited by Seberg, O., Peterson, G., Barfod, A., and Davis, J. I., 619-643. 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, edited by Anderton, L. K. and Barkworth, Mary E., 108-135. 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, edited by Stromberg, M. R., Corbin, J. D., and D'Antonio, C. M., 7-20. 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, edited by Barkworth, Mary E., Anderton, L. K., Capels, K. M., Long, S., and Piep, M. B., 112-141, 396-405, 521-523. Intermountain Herbarium and Utah State University Press.
Soreng, Robert J. 2007. "Poa L." in Flora of North America, Poaceae, part 1, vol. 24., edited by Barkworth, Mary E., Capels, K. M., Long, S. L., and Piep, M. B., 486-601. 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, edited by Wu, Z. Y., Raven, Peter H., and Hong, De-Yuan., 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, edited by Wu, Z. Y., Raven, Peter H., and Hong, De-Yuan., 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.
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, edited by Baldwin, Bruce G., Boyd, S., Ertter, B. J., Patterson, R. W., Rosatti, T. J., and Wilkin, D. H., 593-595, 597. 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, edited by Douglas, G. W., Meidinger, D., and Pojar, J., 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), edited by Jacobs, W. L. and Everett, J., 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), edited by Jacobs, W. L. and Everett, J., 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), edited by Jacobs, W. L. and Everett, J., 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, edited by Douglas, G. D., Straley, G. B., and Meidinger, D., 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, edited by Hickman, J. C., 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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