Publications (* indicates undergraduate research student)
Cohen, J. I. In review. Lithospermum. For: Flora of North America Editorial Committee [eds.], Flora of North America North of Mexico. New York and Oxford. Vol. 15.
Cohen, J. I. In review. Adelinia. For: Flora of North America Editorial Committee [eds.], Flora of North America North of Mexico. New York and Oxford. Vol. 15.
Cohen, J. I. In review. Andersonglossum. For: Flora of North America Editorial Committee [eds.], Flora of North America North of Mexico. New York and Oxford. Vol. 15.
E. Saenz*, and J. I. Cohen. In review. Omphalodes. For: Flora of North America Editorial Committee [eds.], Flora of North America North of Mexico. New York and Oxford. Vol. 15.
Cohen, J. I., and S. Turgman-Cohen. 2023. The conservation genetics of Iris lacustris (Dwarf Lake Iris), a Great Lakes endemic. Plants. 12: 2557. pdf
Cohen, J. I., and L. G. Ruane. 2023. Conservation genetics of Phlox hirsuta, a serpentine endemic. Conservation Genetics. 24: 137-152. pdf
Cohen, J. I. 2022. Notes and the nomenclatures of Lithospermum (Boraginaceae). Journal of the Botanical Research Institute of Texas. 16: 373-375. pdf
Cohen, J. I. 2022. Phylogenomics, floral evolution, and biogeography of Lithospermum L. (Boraginaceae). Molecular Phylogenetics and Evolution. 166: 107317. pdf
Noroozi, M., F. Ghahremaninejad, D. Bogler, J. M. Witherspoon*, G. L. Ryan, J. S. Miller, M. Riahi, and J. I. Cohen. 2022. Parsing a plethora of pollen: the role of pollen size and shape in the evolution of Boraginaceae. Cladistics. pdf
Cohen, J. I., H. Rodriguez*, and H. Hutcheson*. 2021. Distyly in Oreocarya crassipes (Boraginaceae), an endangered species. Southwestern Naturalist.
Moorman, V. R., and J. I. Cohen. 2021. Insights into the individual evolutionary origins of Yersinia virulence factor effector proteins. Plasmid. 114: 102562. pdf
Saenz, E.*, L. Mancera*, and J. I. Cohen. 2020. Hackelia. In S. C. Meyers [ed.], Flora of Oregon. Oregon State University Pres, Corvallis, OR.
Cohen, J. I. 2020. Buglossoides. In S. C. Meyers [ed.], Flora of Oregon. Oregon State University Pres, Corvallis, OR.
Cohen, J. I. 2020. Cynoglossum. In S. C. Meyers [ed.], Flora of Oregon. Oregon State University Pres, Corvallis, OR.
Cohen, J. I. 2020. Andersonglossum. In S. C. Meyers [ed.], Flora of Oregon. Oregon State University Pres, Corvallis, OR.
Cohen, J. I. 2020. Adelinia. In S. C. Meyers [ed.], Flora of Oregon. Oregon State University Pres, Corvallis, OR.
Cohen, J. I. 2020. Lithospermum. In S. C. Meyers [ed.], Flora of Oregon. Oregon State University Pres, Corvallis, OR.
Cohen, J. I. 2019. How to build a distylous flower: comparative floral development and evolution of distylous species from across the angiosperms. American Journal of Botany. 106: 1285-1299. pdf
Cohen, J. I. 2019. The conservation genomics of the endangered distylous gypsophile Oreocarya crassipes (Boraginaceae), the Terlingua Creek Cat’s-Eye. Conservation Genetics. 20: 1315-1328. pdf
Chuanromanee*, T., J. I. Cohen and G. L. Ryan. 2019. Morphological Analysis of Size and Shape (MASS) for leaves. Applications in Plant Sciences. 7: e11288. pdf
Cohen, J. I., J. C. Manning, and D. Euston-Brown. 2019. Lithospermum sylvestre (Boraginaceae), a new species from the Baviaanskloof, Eastern Cape, South Africa. Bothalia. 49: a2411. pdf
Patiño-Siciliano, A., S. Zamudio, y J.I. Cohen. 2019. Dos nuevas especies de Lithospermum (Boraginaceae-Lithospermeae) del centro de México. Phytoneuron. 2019-25: 1-9. pdf
Cohen, J. I. 2018. A revision of the Mexican species of Lithospermum L. (Boraginaceae). Annals of the Missouri Botanical Garden.103: 200-257. pdf
Patiño-Siciliano, A., S. Zamudio, y J.I. Cohen. 2018. Dos nuevas especies de Lithospermum (Boraginaceae) de Michoacán y Querétaro, México. Phytoneuron 2018-56: 1-10. pdf
Jimenez-Mejias, P., J. I. Cohen, and R. F. C. Naczi. 2017. The study of online digitized specimens revalidates Andersonglossum boreale as a species different from A. virginianum (Boraginaceae). Phytotaxa. 295: 22-34. pdf
Cohen, J. I. 2016. De novo sequencing and comparative transcriptomics of floral development of the distylous species Lithospermum multiflorum. Frontiers in Plant Science. 7: 1934. pdf
Xu, Z., M.-L. Zhang, and J. I. Cohen. 2016. Phylogeographic history of Atraphaxis plants in arid northern China and the origin of A. bracteata in the Loess Plateau. PLOS One. 11: e0163243. pdf
Cohen, J. I. 2016. Floral evolution in Lithospermum (Boraginaceae): independent origins of similar flower types. Botanical Journal of the Linnean Society. 180: 213-228. pdf
Cohen, J. I. 2015. Adelinia and Andersonoglossum (Boraginaceae), two new genera from New World species of Cynoglossum. Systematic Botany. 40: 611-619. pdf
Medlin, J. S.*, J. I. Cohen, and D. L. Beck. 2015. Vector potential and population dynamics for Amblyomma inornatum. Ticks and Tick-borne Diseases. 6: 463-472. pdf
Cohen, J. I. 2014. A phylogenetic analysis of morphological and molecular characters of Boraginaceae: Evolutionary relationships, taxonomy, and patterns of character evolution. Cladistics. 30: 139-169. pdf
Davis, J. I., J. R. McNeal, C. F. Barrett, M. W. Chase, J. I. Cohen, M. R. Duvall, T. J. Givnish, S. W. Graham, G. Petersen, J. C. Pires, O. Seberg, D. Wm. Stevenson, and J. Leebens-Mack. 2013. Contrasting patterns of support among plastid genes and genomes for major clades of the Monocotyledons. In P. Wilkin [ed.], Early Events in Monocot Evolution. Cambridge University Press, UK.
Huang, J.-F., M.-L. Zhang, and J. I. Cohen. 2013. Phylogenetic analysis of Lappula Moench (Boraginaceae) based on molecular and morphological data. Plant Systematics and Evolution. 299: 913-926. pdf
Su, Z., M. Zhang, and J. I. Cohen. 2012. Phylogeographic and demographic effects of Quaternary climate oscillations in Hexinia polydichotoma (Compositae) in Tarim Basin and adjacent areas. Plant Systematics and Evolution. 298: 1767-1776. pdf
Cohen, J. I. 2012. Continuous characters in phylogenetic analyses: Patterns of corolla tube length in Lithospermum L. (Boraginaceae). Biological Journal of the Linnean Society. 107: 442-457. pdf
Cohen, J. I., and J. I. Davis. 2012. Molecular phylogenetics, molecular evolution, and patterns of clade support in Lithospermum(Boraginaceae) and related taxa. Systematic Botany. 37: 490-506. pdf
Cohen, J. I., A. Litt, and J. I. Davis. 2012. Comparative floral development in Lithospermum L. (Boraginaceae) and implications for the evolution and development of heterostyly. American Journal of Botany. 99: 797-805. pdf
Cohen, J. I., and J. Miller. 2012. Lithospermum. In G. Davidse, M. Sousa M., S. Knapp, and F. Chiang [eds.]. Flora Mesoamericana, Vol. 4, Part 2. Missouri Botanical Garden Press, St. Louis, MO.
Cohen, J. I. 2011. A phylogenetic analysis of morphological and molecular characters of Lithospermum L. (Boraginaceae) and related taxa: Evolutionary relationships and character evolution. Cladistics. 27: 559-580. pdf
Cohen, J. I., and J. L. Reveal. 2011. (2007) Proposal to conserve Trigonotis Steven against Endogonia (Turcz.) Lindl. (Boraginaceae). Taxon. 60: 598-599. pdf
Cohen, J. I. 2010. “A case to which no parallel exists”: The influence of Darwin’s Different Forms of Flowers [Special Invited Paper]. American Journal of Botany. 97: 701-716. pdf
Cohen, J. I., and J. I. Davis. 2009. Nomenclatural changes in Lithospermum (Boraginaceae) and related taxa following a reassessment of phylogenetic relationships. Brittonia 61: 101-111. pdf
Straub, S. C. K., J. I. Cohen, and J. I. Reveal. 2008. Proposal to reject the name Americus (Cupresseaceae). Taxon. 57: 645-647. pdf
Davis, J. I., G. Petersen, O. Seberg, D. W. Stevenson, C. R. Hardy, M. P. Simmons, F. A. Michelangeli, D. H. Goldman, L. M. Campbell, C. D. Specht, and J. I. Cohen. 2006. Are mitochondrial genes useful for the analysis of monocot relationships? Taxon. 55: 857-870. pdf
Witter, J. A, J. L. Stoyenoff, H. A. Petrillo, J. L. Yocum, and J. I. Cohen. 2005. Effects of beech bark disease on trees and ecosystems. pp 28-35. In C. A. Evans, J. A. Lucas, and M. J. Twery [eds.], Beech Bark Disease: Proceedings of the Beech Bark Disease Symposium. USDA Forest Service, Newtown Square, PA. pdf
Presentations (* indicates undergraduate research student)
Noroozizarmehri, M., and J. I. Cohen. 2023. Plastid phylogenomics and plastid evolution of Lithospermeae. Botany 2023. [submitted presentation]
DeCoursey*, C., H. Root, and J. I. Cohen. 2023. Reproductive phenology of species of Hackelia from western North America. Botany 2023. [submitted poster]
Cohen, J. I. 2023. Community-engaged learning in a plant taxonomy class. Botany 2023. [submitted poster]
Harley, S., D. Sandossi*, and J. I. Cohen. 2023. Student exploration of the plastid genome. Botany 2023. [submitted poster]
Cohen, J. I. 2021. An updated phylogeny of Lithospermum L. (Boraginaceae): Using hundreds of DNA regions to resolve evolutionary relationships. Botany 2021. Vitual. [submitted presentation]
Cohen, J. I., S. Turgman-Cohen, and R. Hackett. 2021. The conservation biology of the Dwarf Lake Iris (Iris lacustris Nutt.). Botany 2021, Virtual. [submitted poster]
Noroozi, M. J. I. Cohen, J. M. Witherspoon*, G. L. Ryan, D. Bogler, J. S. Miller, M. Riahi, and F. Ghahremaninejad. 2020. Pollen diversity and evolution in Boraginaceae. Botany 2020. Virtual. [submitted poster]
Cohen, J. I. 2020. Phylogenetics, Floral morphology, and conservation biology (Oh my!). Utah Valley University, Orem, UT [invited seminar
Cohen, J. I. 2020. A tale of two taxa: Phylogenomics and floral evolution of Lithospermum (Boraginaceae) and population structure of the threatened Phlox hirsuta (Polemoniaceae). Weber State University, Ogden, UT [invited seminar]
Cohen, J., J. Anderson*, D. Williams*, G. Ryan, and L. Ruane. 2019. Population structure and migration of Phlox hirsuta (Polemoniaceae), a rare serpentine species. Botany 2019. Tucson, AZ [submitted talk]
Cohen, J. I., M. Cribari*, and L. Ruane. 2019. Comparative analyses of soil microbiome of Phlox hirsuta (Polemoniaceae), a rare serpentine species. Botany 2019. Tucson, AZ [submitted poster]
Horner*, K., M. Cribari*, J. I. Cohen, and L. Ruane. Botany 2019. Population dynamics of Phlox hirsuta, a rare serpentine endemic. Botany 2019. Tucson, AZ [submitted poster]
Wright*, J. R., G. L. Ryan, and J. I. Cohen. 2019. Modeling the effects of site-dependent mutation rates on intraorganismal genetic heterogeneity within apple trees. Michigan Academy of Arts, Science, and Letters. Alma, MI. [submitted poster]
Anderson*, J., Williams*, D. G. Ryan, L. Ruane, and J. I. Cohen. 2018. Comparative floral morphology of Phlox hirsuta and Phlox speciosa. Michigan Consortium of Botanists at University of Detroit Mercy. Detroit, MI. [submitted poster]
Williams*, D. G. Ryan, L. Ruane, and J. I. Cohen. 2018. Comparative floral morphology of Phlox hirsuta and Phlox speciosa. Botany 2018. Rochester, MN. [submitted poster]
Cohen, J. I., and L. Ruane. 2018. Conservation genetics of Phlox hirsuta, a threatened serpentine species. Botany 2018. Rochester, MN. [submitted poster]
Landis, J., and J. I. Cohen. 2018. Flower size evolution and patterns of selection in organ size genes across the evolutionary history of angiosperms. Botany 2018. Rochester, MN. [submitted poster]
Chuanromanee*, T., S., J. I. Cohen, and G. L. Ryan. 2018. MASS: a tool for morphological analysis of size and shape of leaves. Botany 2018. Rochester, MN. [submitted poster]
Chuanromanee*, T., S., J. I. Cohen, and G. L. Ryan. 2018. Quantitative analysis of leaf shape. Kettering University Homecoming. Flint, MI. [submitted poster]
Chuanromanee*, T., S., J. I. Cohen, and G. L. Ryan. 2018. Quantitative analysis of leaf shape. Michigan Academy of Arts, Science, and Letters. Mount Pleasant, MI. [submitted poster]
Wheeler*, C., J. I. Cohen, S. Turgman-Cohen, and G. L. Ryan. 2018. Investigating intraindividual genomic variation in an apple tree (Malus domestica). Michigan Academy of Arts, Science, and Letters. Mount Pleasant, MI .[submitted poster]
Chuanromanee*, T., S., J. I. Cohen, and G. L. Ryan. 2017 Quantitative analysis of leaf shape. Michigan Consortium of Botanists at Albion College. Albion, MI. [submitted poster]
Cohen, J. I., C. Wheeler*, S. Turgman-Cohen, and G. L. Ryan. 2017. Intraindividual genomic variation in Malus (Rosaceae). Michigan Consortium of Botanists at Albion College. Albion, MI. [submitted lightning talk]
Wood*, K., J. Neri*, R. Boland, J. I. Cohen, and L. G. Ruane. 2017 The demographics, life history, and population genetics of *Yreka Phlox (Phlox hirsuta), an endangered species. Michigan Consortium of Botanists at Albion College. Albion, MI. [submitted poster]
Cohen, J. I. 2017. The conservation biology of Oreocarya crassipes (Boraginaceae), the Terlingua Creek Cat's-Eye. Botany 2017. Fort Worth, TX [submitted talk]
Hutcheson, H., and J. I. Cohen. 2017. Comparative floral development of Oreocarya crassipes (Boraginaceae), a heterostylous species. Botany 2017. Fort Worth, TX [submitted poster]
Ryan, G. L., E. Ashwal, S. Turgman-Cohen, and J. I. Cohen. Intraindividual variation and mutation in apple (Malus x domestica). Botany 2017. Fort Worth, TX [submitted poster]
Wood, K., J. Neri, R. Boland, J. I. Cohen, and L. Ruane. The demographics, life history, and population genetics of Yreka phlox (Phlox hirsuta), an endangered species. Botany 2017. Fort Worth, TX [submitted poster]
Cohen, J. I. 2016. The systematics of Boraginaceae: Investigations at multiple taxonomic levels. Agricultural Research Service. Beltsville, MD [invited seminar]
Cohen, J. I. 2016. Population genetics of Oreocarya crassipes, an endangered species. Michigan Consortium of Botanists meeting 2016 at Grand Valley State University. Allendale, MI [submitted poster]
Ruane, L, K. Wood*, and J. I. Cohen. The demographics, life history, and population genetics of Yreka Phlox (Phlox hirsuta), an endangered species. Botany 2016. Savannah, GA [submitted poster]
Cohen, J. I. 2016. Population genetics of Oreocarya crassipes, an endangered species. Botany 2016. Savannah, GA [submitted poster]
Cohen, J. I. 2016. Breeding system variation in Oreocarya crassipes. Botany 2016. Savannah, GA [submitted poster]
Saenz*, E., and J. I. Cohen. 2015. Comparative gynoecial development in Boraginales. Michigan Consortium of Botanists meeting 2015 at Eastern Michigan University. Ypsilanti, MI [submitted poster]
Cohen, J. I. 2015. The evolution of heterostyly in Boraginaceae. Botany 2015. Edmonton, Alberta [submitted talk]
Cohen, J. I. 2015. The systematics of Boraginaceae and the evolution and development of heterostyly. Eastern Michigan University. Ypsilanti, MI [invited seminar]
Cohen, J. I. 2014. The systematics of Boraginaceae and the evolution and development of heterostyly. Missouri Western State University. St. Joseph, MO [invited seminar]
Cohen, J. I. 2014. The evolution and development of heterostyly. Kettering University. Flint, MI [invited seminar]
Cohen, J. I. 2014. The systematics of Boraginaceae and the evolution and development of heterostyly. Christopher Newport University. Newport News, VA [invited seminar]
Cohen, J. I. 2014. The systematics of Boraginaceae and the evolution and development of heterostyly. Mercyhurst University. Erie, PA [invited seminar]
Gutierrez*, J., and J. I. Cohen. 2013. Comparative floral development of heterostylous species. Botany 2013. New Orleans, LA [submitted poster]
Rodriguez*, H., and J. I. Cohen. 2013. Comparative floral development of heterostylous species in Houstonia (Rubiaceae). Botany 2013. New Orleans, LA [submitted poster]
Saenz*, E., and J. I. Cohen. 2013. Comparative gynoecial development in Boraginales. Botany 2013. New Orleans, LA [submitted poster]
Cohen, J. I. 2013. The evolution and development of heterostyly in Boraginaceae. Howard University. Washington, DC [invited seminar]
Cohen, J. I. 2013. The systematics of Boraginaceae and the evolution and development of heterostyly. Delaware State University. Dover, DE [invited seminar]
Cohen, J. I. 2013. The systematics of Boraginaceae and the evolution and development of heterostyly. Seattle University. Seattle, WA [invited seminar]
Altamira, W., and J. I. Cohen. 2012. Comparative floral development in Lithospermum L. (Boraginaceae). Botany 2012. Columbus, OH [submitted talk]
Castellanos, L., and J. I. Cohen. 2012. Comparative gynoecial development in Boraginaceae and Lamiaceae. Botany 2012. Columbus, OH [submitted poster]
Cohen, J. I. 2011. The systematics of Boraginaceae and the evolution and development of floral morphology. Texas State University. San Marcos, TX [invited seminar]
Cohen, J. I. 2011. A phylogenetic analysis of morphological and molecular characters of Boraginaceae: Taxonomic reevaluations and character evolution. Botany 2011. St. Louis, MO [submitted talk]
Garza*, R., M. Tumonong*, B. Johnson*, and J. I. Cohen. 2011. The utility of mitochondrial DNA regions for phylogeny reconstruction in Boraginaceae. Botany 2011. St. Louis, MO [submitted poster]
Cohen, J. I., and J. I. Davis. 2010. Chloroplast DNA sampling for phylogeny reconstruction: Lessons from Lithospermum L. (Boraginaceae). Botany 2010. Providence, RI [submitted talk]
Cohen, J. I. 2010. Systematics of Lithospermum L.: Taxonomic reevaluations and morphological evolution. Texas A&M International University [invited seminar]
Cohen, J. I. 2010. Systematics of Lithospermum L.: Taxonomic reevaluations and morphological evolution. Southwestern Oklahoma State University [invited seminar]
Cohen, J. I. 2009. Systematics of Lithospermum L.: Taxonomic reevaluations and morphological evolution. Black Hills State University [invited seminar]
Cohen, J. I., and J. I. Davis. 2009. Systematics of Lithospermum L.: Taxonomic reevaluations and morphological evolution. Botany 2009. Snowbird, UT [submitted talk]
Cohen, J. I., A. Litt, D. Wm. Stevenson, and J. I. Davis. 2008. The world of walled marriages: Comparative floral development in Lithospermum L. Botany 2008. Vancouver, B. C., Canada [submitted talk]
Cohen, J. I. 2008. Systematics of Lithospermum L. and the evolution of heterostyly. L. H. Bailey Hortorium Seminar. Ithaca, NY [talk]
Cohen, J. I. 2007. Lithospermum L. systematics: Utilizing multiple cpDNA regions and morphological characters. Botany 2007. Chicago, IL [submitted talk]
Cohen, J. I. 2007. The taxonomy of Boraginaceae. L. H. Bailey Hortorium Seminar. Ithaca, NY [talk]
Cohen, J. I. 2006. Phylogeny and breeding system evolution in Lithospermum L. (Boraginaceae: Lithospermeae). Botany 2006. Chico, CA [submitted talk]
Cohen, J. I. 2006. Chromosome observations in Boraginaceae. L. H. Bailey Hortorium Seminar. Ithaca, NY [talk]
Ahmed, S. A., J. H. DeMera, J. I. Cohen, D. Rosane, V. Druget, A. Herforth, and E. Rodriguez. 2006. Training biomedical researchers on cultural and ecological landscapes in addressing health disparities: explorations in Amazonas, Venezuela and the Dominican Republic. The Tenth International Congress of Ethnobiology. Chiang Rai, Thailand [submitted talk]
Cohen J. I., E. M. Thompson, and J. A. Witter. 2002. Directional effects of American beech (Fagus grandifolia) bole on the exotic beech scale (Cryptococcus fagi). Marquette, MI [submitted poster]