Kristen Hasenstab-Lehman, Ph.D.

Kristen is a plant systematist, botanist, and the conservation geneticist and lab manager of the Conservation Genetics Lab.

Kristen Hasenstab-Lehman, Ph.D., is a plant systematist, botanist, and the conservation geneticist and lab manager of the Conservation Genetics Lab at Santa Barbara Botanic Garden. She integrates field studies, molecular tools, and histological techniques to document biodiversity and to understand the interplay of ecological and evolutionary effects on plants of conservation concern. After earning a master’s degree at San Diego State University, Hasenstab-Lehman earned her doctorate in botany at Claremont Graduate University at California Botanic Garden (formerly Rancho Santa Ana Botanic Garden). She worked at the Smithsonian National Museum of Natural History managing the plant DNA barcoding lab. She has worked with California native plants since 2006. 

Research interests: floristics, plant systematics, DNA barcoding and meta-barcoding, population genomics, phylogenomics/phylogenetics, taxonomy, morphometrics, Boraginales, Dudleya, biogeography 


Guilliams, C.M., K. Hasenstab-Lehman, & B.G. Baldwin. 2020. Nomenclatural changes in western North American Amsinckiinae (Boraginaceae). Novon 28:51-59.

Hasenstab-Lehman, K. & C.M. Guilliams. 2020. Evaluating taxonomic circumscription in Dudleya cymosa and D. parva using high-throughput restriction-site associated DNA sequencing, with an emphasis on rare and potentially undescribed subspecies in the Santa Monica Mountains National Recreation Area. Santa Barbara Botanic Garden, Santa Barbara, California. 37 pages.

HasenstabLehman, K., C.M. Guilliams, & E.A. Thomas. 2020. California Channel Islands Reference Library. Santa Barbara Botanic Garden, California. 21 pages.

Hasenstab-Lehman, K., C.M. Guilliams, R.R. Naesborg, & C. Richart. 2020. Biodiversity Conservation on San Nicolas Island. Ironwood 28(2): 4-7.

Guilliams, C.M. & K. Hasenstab-Lehman. 2020. High-throughput sequencing reveals a complicated evolutionary history between endangered Dudleya verityi, (Crassulaceae) and a widespread congener, D. lanceolata. Santa Barbara Botanic Garden, Santa Barbara, California. 45 pages.

Guilliams, C.M. & K. Hasenstab-Lehman. 2020. Naval Base Ventura County, San Nicolas Island Terrestrial Flora Program Draft Final Report: Developing Botanical Resources for U.S. Navy California Channel Islands: Specimen Processing and Imaging, and a Checklist for San Nicolas Island. Cooperative Agreement N62473-17-2-0005. Santa Barbara Botanic Garden, Santa Barbara, California. 61 pages.

 Guilliams, C.M. & K. Hasenstab-Lehman. 2020. Checklist of the vascular flora of San Nicolas Island, California, Version 1. Originally published online May 1, 2020, updated continually thereafter.

Guilliams, C.M., K.E. Hasenstab-Lehman,and R. Kelley. 2020. Amsinckiopsis. For: The Flora of Oregon, Corvallis, OR.

Guilliams, C.M., K.E. Hasenstab-Lehman,and R. Kelley. 2020. Plagiobothrys. For: The Flora of Oregon, Corvallis, OR.

Simpson, M.G., M.E. Mabry, & K. Hasenstab-Lehman. 2019. Transfer of six species of Cryptantha to the genus Johnstonella (Boraginaceae). Phytotaxa 425:279–289.

Guilliams, C.M., K. Hasenstab-Lehman, & A.J. Searcy. Winter 2019/2020. Community scientists use iNaturalist to map the distribution of a weed on-the-move: Urospermum picroides (Asteraceae). Dispatch, Cal-IPC Newsletter 27(3): 4-5.

Hasenstab-Lehman, K.E. & C.M. Guilliams. 2019. Draft report on the conservation genetics of beach spectaclepod (Dithyrea maritima (Davison) Davison; Brassicaceae). Unpublished report submitted to the California Department of Fish and Wildlife.

Guilliams, C.M., A.I. Hernandez, & K. Hasenstab-Lehman. 2018. Naval Base Ventura County, San Nicolas Island Erosion Control Program Final Report: Population genetic study of island mallow (Malva assurgentiflora) across the Channel Islands archipelago to assess provenance of plants from San Nicolas Island. Cooperative Agreement Number N62473-14-2-00015. Unpublished report. Santa Barbara, California.

Riley, J. with contributions by S. Alfaro, M.C. Arteaga, C.M. Guilliams, K.E. Hasenstab-Lehman, A. Garcia Peralta, & J. Simancas. 2017. A Field Guide to the Vernal Pools of Baja California, Mexico.  Jardín Botanico de San Quintín, San Quintín.

Guilliams, C.M., K.E. Hasenstab-Lehman, M. Mabry, & M.G. Simpson 2017. Memoirs of a frequent flier: phylogenomics reveals 18 long-distance dispersals in the popcorn flowers (Amsinckiinae, Boraginaceae). American Journal of Botany, Special Issue on American Amphitropical Disjunction, 104: 1717-1728.

Hasenstab-Lehman, K.E. 2017. Phylogenetics of the borage family: delimiting Boraginaceae and assessing closest relatives. Aliso 35(1) 41-49.

Simpson, M.G., C.M. Guilliams, K.E. Hasenstab-Lehman, M. Mabry, & L. Ripma 2017. Phylogeny of the popcorn flowers: Use of genome skimming to evaluate monophyly and interrelationships in subtribe Amsinckiinae (Boraginaceae). Taxon 66 (6): 1406-1420.

Chacón, J., F. Luebert, H. Hilger, S. Ovchinnikova, F. Selvi, L. Cecchi, C.M. Guilliams, K. Hasenstab-Lehman, K. Sutorý, M.G. Simpson, & M. Weigend 2016. The borage family (Boraginaceae s.str.): A revised infrafamilial classification based on new phylogenetic evidence, with emphasis on the placement of some enigmatic genera. Taxon 65 (3): 523-546.

Guilliams, C.M., K. Hasenstab-Lehman, José Delgadillo, & B.G. Baldwin 2016. Vernal pool landscapes of Baja California, México: an on-going project to assess vernal pool loss and protect what remains. Studies from the Herbarium, Number 18, California State University, Chico.

Luebert, F., L. Cecchi, M.W. Frohlich, M. Gottschling, C.M. Guilliams, K.E. Hasenstab-Lehman & 15 others 2016. Familial classification of the Boraginales. Taxon 65 (3): 502-522.

Conservation Geneticist & Lab Manager