Dr. Bryan Drew

Areas of Interest

• Phylogenetics and evolution of the Lamiaceae, especially the genera Agastache, Lepechinia, Monardella, and Salvia
• Temporal and spatial origin of the California Floristic Province flora
• Plant speciation processes in Western North America
• Pollination biology
• Conservation genetics
• Salmon habitat restoration
• River and stream rehabilitation

Degrees

• B.S. (1996) - University of California, Berkeley
• PhD. (2011) - University of Wisconsin, Madison

Professional Affiliations

• California Native Plant Society
• Botanical Society of America
• California Botanical Society
• Union of Concerned Scientists
• Salmon Restoration Federation
• International Association for Plant Taxonomy

Dissertation

• Drew, B. T. 2011. Phylogenetics and biogeography of Lepechinia (Lamiaceae), and evolutionary studies within the Mentheae tribe. Ph. D. Dissertation, University of Wisconsin - Madison. 249 pp.

Publications

• Chen, Y.P., Sunojkumar, P., Spicer, R.A., Hughes, C.E., Hodel, R.G.J., Soltis, D.E., Soltis, P.S., Paton, A.J., Sun, M., Drew, B.T. & Xiang, C.L. 2025. Rapid evolutionary radiation of a plant lineage sheds light on the assembly of the dry valley biome in southwest China. Molecular Biology and Evolution, https://doi.org/10.1093/molbev/msaf011
  
• Xu, X.M., Liao, S.J., Liao, B.Y., Qin, Q.M., He, C.Y., Ding, X., Wu, W., Wang, L.Y., Zhang, F.Q., Peng, L.X., Drew, B.T., Li, Y.Q. 2025. Next-generation sequencing-based population genetics unravels the evolutionary history of Rhodomyrtus tomentosa evolutionary history in China. BMC Plant Biology, 25: 338
• Rose, J.P., Kriebel, R., Sytsma, K.J., & Drew, B.T. 2024. Phylogenomic perspectives on speciation and reproductive isolation in a North American biodiversity hotspot: An example using California sages (Salvia subg. Audibertia; Lamiaceae). Annals of Botany, 134: 295–310. https://doi.org/10.1016/j.pld.2024.04.011
• Jiang, L.Q., Drew, B.T., Watchara, A., Hong Wu, H., Yue Zhao, Y., Peng, H. & Xiang, C.L. 2024. Comparative plastome analysis of Arundinelleae (Poaceae, Panicoideae), with implications for phylogenetic relationships and plastome evolution. BMC Genomics, 25:1016.
• Zhao, Y., Chen, Y.P., Drew, B.T., Zhao, F., Almasi, M., Turginov, O.T., Xiao, J.F., Karimi, A.G., Salmaki, Y., Yu, X.Q. & Xiang, C.L. 2024. Molecular phylogeny and taxonomy of Phlomoides (Lamiaceae subfamily Lamioideae) in China: Insights from molecular and morphological data. Plant Diversity, 46: 462–475.https://doi.org/10.1016/j.pld.2024.04.011
• Rose, J.P., Wiese, J., Pauley, N., Dirmenci, T., Celep, F., Ozcan, T., Xiang, C.L., & Drew, B.T.  2023. North American-East Asian disjunctions and phlogenetic relationships within subtribe Nepetinae (Lamiaceae).  Molecular Phylogenetics and Evolution, 187: doi.org/10.1016/j.ympev.2023.107873
• Zhao, Y., Chen, Y.P., Yuan, J.C., Paton A.J., Nuraliev, M.S., Zhao, F., Drew, B.T., Salmaki, Y., Turginov, O.T., Sun, M., Sennikov, A.N., Yua, X.Q., Li, B. & Xiang, C.L. 2023. Museomics in Lamiaceae: Resolving the taxonomic mystery of Pseudomarrubium, Current Plant Biology, 35: doi.org/10.1016/j.cpb.2023.100300
• Morrison, E., & Drew, B.T. 2023. Potential hybridization among two species of Salvia in California. Transactions of the Nebraska Academy of Sciences, 43: 25–33.
• Kriebel R., Drew, B.T., Claßen-Bockhoff R., & Sytsma, K.J. 2023. Evolution of anther connective teeth in sages (Salvia, Lamiaceae) under bee and hummingbird pollination. Flora, 298: doi.org/10.1016/j.flora.2022.152199
• Bai, R.Z., Zhao, F., Drew, B.T., Xu, G., Cai, J., Shen, S.K., & Xiang, C.L. 2023. Seed morphology of Hypericum in China (Hypericaceae) and its taxonomic significance. Microscopy Research and Technique, 86: 1496–1509.
• Zhao Y., Zhao, F., Salmaki, Y., Paton A., Cai, J., Nuraliev, M.S., Drew, B.T., Mahmoud. C., Bo Li, B., Efimov, P., Turginov, O.T., Liang, C.Z., Chen, Y.P. & Xiang, C.L. 2023. Home at last: Molecular phylogenetic analyses support subsuming Metastachydium within Phlomoides (Lamiaceae). Taxon, 72:590–606.
• Kriebel, R., Rose, J.P., Drew, B.T., González-Gallegos, J.G., Celep, F., Mahdjoub, M.M., Heeg, L. & Sytsma K.J. 2023. Model selection, hummingbird natural history, and biological hypotheses: a response to Sazatornil et al. Evolution, 77:646–653. doi.org/10.1093/evolut/qpac023
• Turdiboev, O.A., Shormanova, A.A., Sheludyakova, M.B., Akbarov, F., Drew, B.T. & Celep, F. 2022. Synopsis of the Central Asian Salvia species with identification key. Phytotaxa, 543:001–020.
• Antar, G.M., Hays, M., Harley, R.M. & Drew, B.T. 2022. Phylogenetic placement and taxonomic revision of the genus Monochilus (Lamiaceae), a rare Brazilian endemic. Systematic Botany, 47:1112­–1121.
• Celep, F., Karaer, F. & Drew, B.T. 2022. Lamium cappadocicum, a new species from Central Anatolia, Turkey: evidence from molecular and morphological studies. Turkish Journal of Botany, 46:614-623.
• Elvin, M.A., Kelley, R.B. & Drew, B.T. 2022. Vegetative and trichome morphology distinguish the Monardella ovata species complex from the Monardella odoratissima species complex: taxonomic studies in Monardella (Lamiaceae) VII. Systematic Botany, 47:697–715.
• Rose, J.P., Xiang, C.L., Sytsma, K.J. & Drew, B.T. 2022. A timeframe for mint evolution: Towards a better understanding of trait evolution and historical biogeography in Lamiaceae. Botanical Journal of the Linnean Society, 1:15–38. doi.org/10.1093/botlinnean/boab104
• Chen, Y.P., Turdimatovichb, T.O., Nuralievc, M.S., Lazarevićd, P., Drew, B.T., & Xiang, C.L. 2022. Phylogeny and biogeography of the northern temperate genus Dracocephalum s.l. (Lamiaceae). Cladistics, 4:429–451. https://doi.org/10.1111/cla.12502
• Spalink, D., Karimi, N., Richards, J.H., Eifler, E., DiNicola, A., Thein, T., Schomaker, L., Drew, B.T., Mcculloh, K.A. & Givnish, T.J. 2022. Short-distance gene flow and morphological divergence in Eschscholzia parishii (Papaveraceae): implications for speciation in desert winter annuals. Botanical Journal of the Linnean Society, 200:255–269.
• Kriebel, R., Drew, B.T., González-Gallegos, J.G., Celep, F., Antar, G., Pastore, J.F.B., Uriá, R. & Sytsma, K.J. 2021. Stigma shape shifting in sages (Salvia: Lamiaceae) – hummingbirds guided the evolution of New World floral features. Botanical Journal of the Linnean Society, 199: 228–248.
• Thompson, K. & Drew, B.T. 2022. Impact of honeybee (Apis mellifera) gathered corn grain dust on young adult bee survival. Journal of Apicultural Research, 61:1–8.
• Tarullo, C. Rose, J.P., Sytsma, K.A., and Drew, B.T. 2021. Using a supermatrix approach to explore phylogenetic relationships, divergence times, and historical biogeography of Saxifragales. Turkish Journal of Botany, 45:440-456.
• Dirmenci, T., Arabacı, T., Özcan, T., Drew, B.T., Yazıcı, T., Martin, E. & Celep F. 2021. Taxonomy of the genus Origanum. Pp. 1–48 in: Oregano – The genus Origanum (Lamiaceae): Taxonomy, Cultivation, Chemistry, and Uses. Dirmenci, T, editor. Balıkesir University, Balıkesir, Turkey.
• Zhao, F., Wua, Y.W., Drew, B.T., Yao, G., Chen, T.P., Cai, J., Liu, E.D., Li, B., & Xiang, C.L. 2021. Systematic placement of the enigmatic Southeast Asian genus Paralamium and an updated phylogeny of tribe Pogostemoneae (Lamiaceae subfamily Lamioideae). Frontiers in Plant Science, doi.org/10.3389/fpls.2021.646133
• Rose, J.P., Kriebel, R., Kahan, L., DiNicola, A., Gonzalez-Gallegos, J.P., Celep, F., Lemmon, E.M., Lemmon, A.R., Sytsma, K.A, and Drew, B.T. 2021. Sage insights into the phylogeny of salvia: dealings with sources of discordance within and across genomes. Frontiers in Plant Science, doi.org/10.3389/fpls.2021.767478
• Zhao, F., Chen, Y.P., Salmaki, Y., Drew, B.T., Wilson, T.C., Scheen, A.C. Celep, F., Bräuchler, B., Bendiksby, M., Wang, Q., Min, D.Z., Peng, H., Olmstead, R.G., Li, B., & Xiang, C.L. 2021. An updated tribal classification of Lamiaceae based on plastome phylogenomics. BMC Biology, 19:1-27.
• Celep, F., Radars, E., and Drew, B.T. 2020. Two new hybrid species of Salvia (S. x karamanensis and S. x doganii) from Turkey: evidence from molecular and morphological studies. Turkish Journal of Botany, 44:647-660.

• Drew, B.T. 2020. Evolution, pollination biology, and species richness of Salvia (Lamiaceae). International Journal of Plant Sciences, 181:767-769.
• Zhao, F., Drew, B.T., Chen, Y.P., Hu, G.X., Li, B., and Xiang, C.L. 2020. The chloroplast genome of Salvia: genomic characterization and phylogenetic analysis. International Journal of Plant Sciences, 181:812-830.
• Zhao F., Li B., Drew, B.T., Chen, Y.P., Wang, Q., Yu, W.B., Liu, E.D., Salmaki, Y., Peng, H., & Xiang, C.L. 2020. Leveraging plastomes for comparative analysis and phylogenomic inference within Scutellarioideae (Lamiaceae). PLoS ONE, 5:e0232602
• Hu, G.X., Liu, E.D., Wu, Z.K., Sytsma, K.J., Drew, B.T., and Xiang, C.L. 2020. Integrating DNA sequences with morphological analysis clarifies phylogenetic position of Salvia grandifolia (Lamiaceae): an enigmatic species endemic to southwestern China. International Journal of Plant Sciences, 181:787-799.
• Kriebel, R., Drew, B.T., González-Gallegos, J.G., Celep, F., Mahdjoub, M.M., Heeg, L., & Sytsma K.J. 2020. Pollinator shifts, contingent evolution, and evolutionary constraint drive the diversification of Salvia (Lamiaceae) flowers: evidence from morphometrics and phylogenetic comparative methods. Evolution, 74: 1335-1355.
• Drew, B.T. 2020. A fresh look at Rosemary. In Essence, 18: 42–44.
• Mota, M., Drew, B.T., & Pastore, J.F.B. 2020. Salvia rupestris (Lamiaceae), a new species endemic to the Arapuá Mountains in Pernambuco State, Brazil. Brittonia, doi.org/10.1007/s12228-020-09617-w
• Drew, B.T. 2019. Lepechinia. Flora of North America North of Mexico Vol. 16: Lamiales.
• Antar, G., Harley, R.M., Sano, P.T., and Drew, B.T. 2019. The genus Lepechinia Willd. (Lamiaceae - Salviinae) in Brazil. Acta Botanica Brasilica, 33:592-601.
• Elvin, M.A., Kelley, R.B. & Drew, B.T. 2019. Trichome Morphology Relates to Taxonomic Diversity in Monardella in the lower Snake River Watershed of Idaho and Oregon, USA: Taxonomic Studies in Monardella (Lamiaceae) VI. The Journal of the Torrey Botanical Society, 146:299-313.
• Kriebel, R., Drew, B.T., Drummond, C.P., González-Gallegos, J.G., Celep, F., Mahdjoub, M.M., Rose, J.P., Xiang, C.L., Hu, G.X., Walker, J.B., Lemmon, E.M., Lemmon, A.R., & Sytsma K.J. 2019. Tracking the temporal shifts in area, biomes, and pollinators in the radiation of Salvia (sages, Lamiaceae) across continents: leveraging Anchored Hybrid Enrichment and targeted sequence data. American Journal of Botany, 106:573-597.
• Shao, M.N., Qu, B., Drew, B.T., Xiang, C.L., Miao, Q., & Luo, S.H. 2019. Outbreak of a New Alien Invasive Plant Salvia reflexa in Northeast China. Weed Research, 59:201-208.
• Spalink, D., Kriebel, R., Li, P., Pace, M.C., Drew, B.T., Zaborsky, J.G., Rose, J., Givnish, T.J., Feist, M.A., Alverson, W.S., Waller, D.M., Cameron, K.M., & Sytsma, K.J. 2018. Spatial phylogenetics reveals evolutionary constraints on the assembly of a large regional flora. American Journal of Botany, 105:1038-1050.
• Barrabé, L., Lavergne, S., Karnadi-Abdelkader, G., Drew, B.T., Birnbaum, P., & Gâteblé, G. 2018. Changing Ecological Opportunities Facilitated the Explosive Diversification of New Caledonian Oxera (Lamiaceae). Systematic Biology, 68:460-481.
• Hu, G.X., Takano, A., Drew, B.T., Liu, E.D., Soltis, D.E., Soltis, P.S., Peng, H., & Xiang, C.L. 2018. Phylogeny and staminal evolution of Salvia (Lamiaceae, Nepetoideae) in East Asia. Annals of Botany, 122:649-668.
• Rose, J., Kleist, T., Schönenberger, J., Drew, B.T., Sytsma, K.J., & Löfstrand, S. 2018. Phylogeny, historical biogeography, and diversification of angiosperm order Ericales suggest ancient Neotropical and East Asian connections. Molecular Phylogenetics and Evolution, 122:59-79.
• Xiang, C.L., Zhao, F., Cantino P.D., Drew, B.T., Li, B., Liu. E., Solits, D.E., Pamela P.S., & Peng, H. 2018. Molecular systematics of Caryopteris (Lamiaceae) and its allies with reference to the molecular phylogeny of subfamily Ajugoideae. Taxon, 67:376-394.
• Drew, B.T., Liu, S., Bonifacino, J.B., & Sytsma, K.J. 2017. Amphitropical disjunctions in New World Menthinae: three Pliocene dispersals to South America following late Miocene dispersal to North America from the Old World. American Journal of Botany, 104: 1695-1107.
• McTavish, E.J., Drew, B.T., Redelings, B., & Cranston, K. 2017. How and why to build a unified tree of life. Bioessays, doi:10.1002/bies.201700114
• Yu, X.Q., Drew, B.T., Yang, J.B., Gao, L.M. & Li, D.Z. 2017. Comparative chloroplast genomes of eleven Schima (Theaceae) species: Insights into DNA barcoding and phylogeny. PloS ONE, 12(6) p.e0178026.
• Drew, B.T., González-Gallegos, J.G., Xiang, C.L., Kriebel, R., Drummond, C.P., Walker, J., & Sytsma, K.J. 2017. Salvia united: The greatest good for the greatest number. Taxon, 66: 133-145.
• Spalink, D., Drew, B.T., Pace, M.C., Zaborsky, J.G., Cameron, K. & Sytsma, K.J. 2016. Evolution of geographical place and niche space: patterns of diversification in the North American sedge (Cyperaceae) flora. Molecular Phylogenetics and Evolution, 95: 183-195.
• Chen, Y.P., Drew, B.T., Li, B., Soltis, D.E., Soltis, P.E. & Xiang, C.L. 2016. Resolving the phylogenetic position of Ombrocharis (Lamiaceae), with reference to the molecular phylogeny of tribe Elsholtzieae. Taxon, 65: 123-136.
• Yao, G., Drew, B.T., Yi, T.S., Yan, H.F., Yuan, Y.M. & Ge, X.J. 2016. Phylogenetic relationships, character evolution and biogeographic diversification of Pogostemon s.l. (Lamiaceae). Molecular Phylogenetics and Evolution, 98: 184-200.
• Spalink, D., Drew, B.T., Pace, M.C., Zaborsky, J.G., Starr, J.R., Cameron, K. & Sytsma, K.J. 2016. Biogeography of the cosmopolitan sedges (Cyperaceae) and the area-richness correlation in plants. Journal of Biogeography, 43: 1893-1904.
• Hinchliff, C., Smith, S.A., Allman, J.F., Burleigh, J.G., Chaudhary, R., Cognill, L.M., Crandall, K.A., Deng, J., Drew, B.T.,…et al. 2015. Synthesis of phylogeny and taxonomy into a comprehensive tree of life. Proceedings of the National Academy of Sciences, doi:10.1073/pnas.1423041112
• Walker, J.B., Drew, B.T. & Sytsma, K.J. 2015. Unraveling species relationships within the iconic California floristic province sages (Salvia subgenus Audibertia, Lamiaceae). Systematic Botany, 40:826-844.
• González-Gallegos, J.G., Drew, B.T. & Cuevas-Guzmán, R. 2015. Novelties on the distribution of Lepechinia flammea (Lamiaceae), rediscovery of L. glomerata in Jalisco, Mexico, and their phylogenetic position within Lepechinia. Botanical Sciences, 93: 299-312.
• Deng, J., Drew, B.T., Mavrodiev, E.V., Gitzendanner, M.A., Soltis, P.S. & Soltis, D.E. 2015. Phylogeny, divergence times, and historical biogeography of the angiosperm family Saxifragaceae. Molecular Phylogenetics and Evolution, 83: 86-98.
• Deng, T., Nie, Z.L., Drew, B.T., Volis, S., Kim, C., Xiang, C.L., Wang, Y.H. & Sun, H. 2015. Does the arcto-tertiary biogeographic hypothesis explain the disjunct distribution of northern hemisphere herbaceous plants? The case of Meehania (Lamiaceae). PLoS ONE, 10:2 e0117171-e0117171.
• Yu, Q., Maki, M., Drew, B.T., Paton, A.J., Li, H., Zhao, J., Conran, J.G. & Li, J. 2014. Phylogeny and historical biogeography of Isodon (Lamiaceae): rapid radiation in south-west China and Miocene overland dispersal into Africa. Molecular Phylogenetics and Evolution, 77:183-194.
• Drew, B.T., Cacho, N.I. & Sytsma, K.J. 2014. The transfer of two rare monotypic genera, Neoeplingia and Chaunostoma, to Lepechinia (Lamiaceae), and notes on their conservation. Taxon, 63: 831-842.
• Drew, B.T., Ruhfel, B.R., Smith, S.A., Moore, M.J., Briggs, B.G., Gitzendanner, M.A., Soltis, P.S. & Soltis, D.E. 2014. Another look at the root of the angiosperms reveals a familiar tale. Systematic Biology, 63: 368-382.
• Sulman, J.D., Drew, B.T., Drummond, C., Hayasaka, E. & Sytsma, K.J. 2013. Systematics, biogeography, and character evolution of Sparganium (Typhaceae): diversification of a widespread, aquatic lineage. American Journal of Botany, 100: 2023-2039.
• Drew, B.T., Gazis, R., Cabezas-Padilla, P., Swithers,, K.S., Deng, J., Rodriguez, R., Katz, L.A., Crandall, K.A., Hibbett, D.S. & Soltis, D.E. 2013. Lost branches on the tree of life. PLoS Biology, 11(9): e1001636.
• Drew, B.T. 2013. Data deposition: missing data mean holes in tree of life. Nature, 493(7432): 305-305.
• Drew, B.T. & Sytsma, K.J. 2013. The South American radiation of Lepechinia (Lamiaceae): phylogeny, divergence times, and evolution of dioecy. Botanical Journal of the Linnean Society, 171: 171-190.
• Drew, B.T. & Sytsma, K.J. 2012. Phylogenetics, biogeography, and staminal evolution in the tribe Mentheae (Lamiaceae). American Journal of Botany, 99: 933-953.
• Drew, B.T. & Sytsma, K.J. 2011.Testing the monophyly and placement of Lepechinia in the tribe Mentheae (Lamiaceae). Systematic Botany, 36: 1038-1049.
• Katinas L, Crisci, J.V., Jabaily, R.S., Williams, C., Walker, J., Drew, B.T., Bonifacino, J.M. & Sytsma, K.J. 2008. Evolution of secondary heads in Nassauviinae (Asteraceae, Mutisieae). American Journal of Botany, 95: 229-240.
• Drew, B.T. & Knorr, J. 2005. Rare bryophytes and lichens of the Klamath National Forest. Scott River Ranger District, Klamath National Forest. USFS.
• Fetcho, K. & Drew, B.T. 2001. 2000-2001 Chinook and Coho spawning report. Lower Trinity Ranger District, Six Rivers National Forest. USFS.

Biology Faculty Research Directory