Guilliams, C.M., K.E. Hasenstab-Lehman, L. Luna-Mendoza, and C.B. Williams (accepted). The California Islands – an introduction to the landscapes, plants, and conservation challenges of a binational archipelago. Madroño.

Calloway, S.M., D. Grossenbacher, C.M. Guilliams, K.E. Hasenstab-Lehman, M. Ritter, and J. Yost (accepted). Deer mice and low precipitation limit seedling recruitment in a rare, endemic island shrub (Malva assurgentiflora subsp. assurgentiflora). Madroño.

Ceceña Sanchez, M.L., L. Luna Mendoza, and C.M. Guilliams 2026. Arctostaphylos guadalupensis (Ericaceae), a new species of manzanita from Guadalupe Island, Mexico. Madroño 73(2): 1-11.

Lucas, M.S. and 87 other authors 2026. Population genomics of a cosmopolitan weed provides insights into its local adaptation and recent demographic history. Molecular Ecology 35(10). https://doi.org/10.1111/mec.70368.

Soza, V., C.M. Guilliams, and K.E. Hasenstab-Lehman 2026. Galium in Jepson Flora Project (eds.) Jepson eFlora, Revision 14. https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=11284.

Roberts, M.B., K.E. Hasenstab-Lehman, and C.M. Guilliams. 2026. Conservation genomics of two rare varieties of Astragalus pycnostachyus A. Gray (Fabaceae). Madroño 73(1): 15-27.

Raven, P.H., B.G. Baldwin, S. Fawcett, J.B. Beck, H. Forbes, C.M. Guilliams, A. Jones, J.P. Rebman, and J. Xerogeanes. 2026. Fertility and clonality of Pickeringia (Fabaceae), a unique endemic genus of the California chaparral. Artemisia 51(2): 20-26.

Simpson, M.G., M.E. Mabry, P.D. Blischak, T. Böhnert, C.M. Guilliams, K.E. Hasenstab-Lehman, F. Luebert, N. García, A. Castañeda, M. Weigend, and R.A. Scherson. 2026. Resolving the taxonomic enigma of Nesocaryum stylosum (Boraginaceae): phylogenetic evidence for its reclassification as Cryptantha stylosa. Phytokeys 269: 141-169. DOI: 10.3897/phytokeys.269.176263.

Chomentowska, A., S.G. Dauerman, N. Heaphy, L. Gaspar, P.M. Molina, C.M. Guilliams, R.M. Ogburn, L.P. Hancock, J.A.M. Holtum, A. Moreira-Muñoz, M. Arakaki, P.W. Sweeney, I.E. Peralta, E.J. Edwards. 2025. Phylogenomic analyses of the diverse desert-mountain plant lineage Cistantheae. Annals of Botany, mcaf319: https://doi.org/10.1093/aob/mcaf319.

Guilliams, C.M. and R.B. Kelley 2025. Two new combinations in Plagiobothrys (Boraginaceae subtribe Amsinckiinae). Phytotaxa 733 (1): 1-7.

Ayers, A., H.E. Schneider, J. Knapp, K.E. Hasenstab-Lehman, and C.M. Guilliams 2025. A story of surveys: summarizing visitation and conservation actions of two federally listed plant taxa (Malacothrix indecora and M. squalida, Asteraceae). Western North American Naturalist 85(2): 341-358.

Namoff, S., K. Hasenstab-Lehman, H. Schneider, and C.M. Guilliams 2025. Conservation genomics of Crocanthemum greenei: Effects of land management on the genetic structure and diversity of a Channel Islands endemic plant. Western North American Naturalist 85(2): 246-264.

Hasenstab-Lehman, K.E. and C.M. Guilliams 2025. Conservation genomics of beach spectaclepod (Dithyrea maritima, Brassicaceae). Western North American Naturalist 85(2): 265-279.

Guilliams, C.M., K.E. Hasenstab-Lehman, and W.F. Hoyer, III. 2025. Updated checklist of the vascular flora of San Nicolas Island, California. Western North American Naturalist 85(2), Article 12. https://scholarsarchive.byu.edu/wnan/vol85/iss2/12/.

Ayers, A., I. Salangsang, J. Spaw, and C.M. Guilliams. 2025. An insider’s look: the Clifton Smith Herbarium. Ironwood 37, Spring-Summer: 20-27.

Roberts, M.B., K.E. Hasenstab-Lehman, and C.M. Guilliams 2025. Population genomics of the Astragalus pycnostachyus species complex – Final Draft Report prepared for California Native Plant Society by the Santa Barbara Botanic Garden. 29 pages.

Guilliams, C.M. 2024. Thingia, in Jepson Flora Project (eds.) Jepson eFlora, Revision 13, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=8652.

Guilliams, C.M. and J.M. Miller 2024. Cistanthe, in Jepson Flora Project (eds.) Jepson eFlora, Revision 13, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=8892.

Miller, J.M. and C.M. Guilliams 2024. Montiaceae, in Jepson Flora Project (eds.) Jepson eFlora, Revision 13, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=93786.

Guilliams, C.M., K.E. Hasenstab-Lehman, and S.R. Hill 2024. Malva, in Jepson Flora Project (eds.) Jepson eFlora, Revision 13, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=9580.

Guilliams, C.M. and K.E. Hasenstab-Lehman 2024. A new combination in the California Channel Island Woody Galium Complex (Rubiaceae). Phytoneuron 2024-69: 1-3.

O’Brien, J., C.M. Guilliams, S. Puentes, and L. Lindstrand III 2024. A new species of Lewisia (Montiaceae) from the southeastern Klamath Mountains, California. Madroño 71(3): 136-142.

Guilliams, C.M., E. Small, & S.A. Junak 2024. Noteworthy Collections, Los Angeles County, Medicago minima & Medicago sphaerocarpos. Crossosoma 49(1): 11-12.

McEvoy, S.L., R.S. Meyer, K.E. Hasenstab-Lehman, and C.M. Guilliams 2024. Genome Report: The reference genome of an endangered Asteraceae, Deinandra increscens subsp. villosa, endemic to the Central Coast of California. G3: Genes, Genomes, Genetics: 10.1093/g3journal/jkae117.

Hasenstab-Lehman, K.E., C.M. Guilliams, & W.F. Hoyer III 2024. Noteworthy Collections, San Nicolas Island, Vascular Plants. Crossosoma 48 (1&2): 21-25. Note: Volume 48 corresponds to 2022, but published in 2024.

Guilliams, C.M., K.E. Hasenstab-Lehman, R. Shea, M. Ball, & K. McEachern 2024. Noteworthy collections, Santa Rosa Island, Vascular Plants. Crossosoma 48 (1&2): 19-20. Note: Volume 48 corresponds to 2022, but published in 2024.

Guilliams, C.M. & B. Carter 2024. Noteworthy collection, Santa Catalina Island, Eichhornia crassipes (Mart.) Solms (Pontederiaceae). Crossosoma 48 (1&2): 18. Note: Volume 48 corresponds to 2022, but published in 2024.

McCabe, S.W., K. Hasenstab-Lehman, C.M. Guilliams 2024. A new, rare cliff-dwelling Dudleya (Crassulaceae) species from Orange County, California. Madroño 70(3): 151-157.

Motta, C.I.**, K.E. Hasenstab-Lehman, C.M.Guilliams, S.J. Mazer, G.A. Wahlert, W.R. Ferren, K.C. Seltmann 2024. Genome skimming of herbarium specimens reveals phylogeographic trends among populations of an estuarine seablite (Chenopodiaceae: Suaeda esteroa). Madroño 70(3): 126-137.

Guilliams, C.M. and K. Hasenstab-Lehman 2024. Conservation genetics of the endangered Lompoc yerba santa (Eriodictyon capitatum Eastw., Namaceae), including phylogenomic insights into the evolution of Eriodictyon. Plants 13(1), 90; https://doi.org/10.3390/plants13010090

Schneider, H. and C.M. Guilliams 2024. Rigid bird’s-beak (Cordylanthus rigidus) review at Burton Mesa Ecological Reserve. Unpublished final report prepared for Vandenberg Village Community Services District, 9 pages.

Hasenstab-Lehman, K.E., C.M. Guilliams, and C. Hazelquist 2024. A vascular plant barcode reference library for Naval Base Ventura County, Point Mugu. Unpublished final report prepared for The U.S. Navy by the Santa Barbara Botanic Garden, Santa Barbara, California, 17 pages.

Guilliams, C.M., K. Hasenstab-Lehman, A. Ayers, and B. Carter 2024. Status Assessment and Conservation Actions for Sensitive and Listed Dudleya (liveforever) Taxa Affected by the Woolsey Fire, Draft Final Report. Santa Barbara Botanic Garden, Santa Barbara. 152 pages.

Ertter, B. and C.M. Guilliams 2023. Potentilla transitoria (Rosaceae), a new species from the middle Rocky Mountains of North America, with notes on comparable species. Phytoneuron 2023-49: 1-15.

Roddy, A., K. Simonin, C.M. Guilliams, P.A. Fine, T. Dawson 2023. Flowers are leakier than leaves but cheaper to build. New Phytologist, published online 27 June 2023 http://doi.org/10.1111/nph.19104.

Upton, R., et al. 2023. American Herbal Pharmacopoeia, Yerba Santa Leaves & Aerial Parts, Eriodictyon angustifolia, E. californicum, E. trichocalyx, and closely related species, Standards of Identity, Purity, Analysis, and Quality Control. 82 pages.

Mulroy, T., C.M. Guilliams, K.E. Hasenstab-Lehman 2023. Three new Dudleya taxa (Crassulaceae) from coastal northwestern Baja California, Mexico. Madroño 70(1): 23-66.

Hoppe, E.D., V. Birman, I. Kurtaliaj, C.M. Guilliams, B.G. Pickard, S. Thomopoulos, and G.M. Genin 2023. A discrete shear lag model of the mechanics of hitchhiker plants, and its application to tendon-to-bone repair. The Proceedings of the Royal Society A 479: 20220583

Guilliams, C.M., A. Ayers, and R. Naesborg 2023. Final Report for Task Agreement Number P19AC01093: Backlog Cataloging of NPS Botanical Specimens at Channel Islands National Park. Santa Barbara Botanic Garden, Santa Barbara, California. 27 pages.

Guilliams, C.M., C. Hazelquist, and K. Hasenstab-Lehman. 2023. Preliminary results of genetic analysis to evaluate an unknown Lewisia (Montiaceae) from Nevada County, California. Santa Barbara Botanic Garden, Santa Barbara, California. 19 pages.

Hasenstab-Lehman, K.E., Hazelquist, C., Guilliams, C.M., Thomas, E., Rivera, I., Schwarz C.F., Reese Naesborg, R., and S.M. Calloway. 2023. Building a DNA barcode reference library for San Nicolas Island. Unpublished final report prepared for The U.S. Navy by the Santa Barbara Botanic Garden, Santa Barbara, California, 50 pages.

Kofron, C.P., S.E. Termondt, L.H. Lum, H.E. Schneider, K.E. Hasenstab-Lehman, and C.M. Guilliams 2022. Status of endangered Lompoc yerba santa Eriodictyon capitatum (Namaceae): an endemic plant in Santa Barbara County, Southern California. Bulletin of Southern California Academy of Sciences. 121(3): 139-159.

C. Matt Guilliams, K. Hasenstab-Lehman, and H. Schneider. 2022. Census and conservation seed banking of northern island mallow (Malva assurgentiflora (Kell.) M.F. Ray subsp. assurgentiflora; Malvaceae) on San Miguel and Anacapa islands, Channel Islands National Park. Prepared for California Institute for Environmental Studies. 20 pages.

Hasenstab-Lehman, K. and C. Matt Guilliams. 2022. Conservation genomics of island mallow (Malva assurgentiflora (Kell.) M.F. Ray, Malvaceae) with a focus on northern island mallow (Malva assurgentiflora subsp. assurgentiflora. Prepared for California Institute for Environmental Studies. 48 pages.

Hasenstab-Lehman, K., S. Kauppinen, C. Matt Guilliams, C. Hazelquist, D. Thompson, and K. McEachern. 2022. Using genetic data to guide conservation actions for the endangered single-island endemic plant Castilleja mollis (soft-leaved paintbrush). Prepared for the U.S. Fish and Wildlife Service. 86 pages.

Schneider, H., K. Lehman, K. Mason, S. Carson, M. Guilliams. 2022. Understanding and conserving the Endangered Kern mallow (Eremalche parryi ssp. kernensis) 2022 Annual Report. Prepared for the Bureau of Land Management. 19 pages.

Guilliams, C.M. 2022. 80,000+ herbarium specimens digitized, now on public data portal. Ironwood 32, Fall/Winter.

Namoff, S., K. Hasenstab-Lehman, C.M. Guilliams, and H. Schneider. 2022. Conservation genomics of island rush-rose (Crocanthemum greenei (B.L. Rob.) Sorrie, Cistaceae): Effects of historical land management practices on the genetic structure and diversity of a Channel Islands endemic plant. Draft report prepared for California Department of Fish and Wildlife by the Santa Barbara Botanic Garden, Santa Barbara, California.30 pages.

Hasenstab-Lehman, K. and C.M. Guilliams. 2022. Metabarcoding study of the San Clemente Island fox (Urocyon littoralis clementae) with a focus on invertebrate and plant contributions across sampling sites. Santa Barbara Botanic Garden, Santa Barbara, California. 40 pages.

Guilliams, C.M. & K.E. Hasenstab-Lehman. 2022. Conservation genomics of Lompoc yerba santa (Eriodictyon capitatum, Namaceae), including phylogenomic insights into the evolution of Eriodictyon. Santa Barbara Botanic Garden, Santa Barbara, California. 38 pages.

Guilliams, C.M., K.E. Hasenstab-Lehman, & B. Carter. 2022. Status Assessment and Conservation Actions for Sensitive and Listed Dudleya (liveforever) Taxa Affected by the Woolsey Fire, Draft Annual Report, Year 2. Santa Barbara Botanic Garden, Santa Barbara, California. 46 pages

Guilliams, C.M., J.M. Guilliams**, and M.J. Guilliams** 2021. New and interesting records of lichens from California: Ramalina menziesii. Bulletin of the California Lichenological Society 28(2): 62-63.

Guilliams, C.M. 2021. Gruvelia, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=84715.

Kelley, R.B. and Guilliams, C.M. 2021. Plagiobothrys, in Jepson Flora Project (eds.) Jepson eFlora. Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=8764.

Guilliams, C.M. and R.B. Kelley 2021. Pectocarya, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=8762.

Guilliams, C.M. and K.E. Hasenstab-Lehman 2021. Simpsonanthus, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=82940.

Guilliams, C.M. and R.B. Kelley 2021. Amsinckiopsis, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=84705.

Guilliams, C.M. 2021. Sonnea, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=84716.

Simpson, M.G., C.M. Guilliams, K.E. Hasenstab-Lehman, and R.B. Kelley 2021. Boraginaceae, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=69.

Kelley, R.B., T.C. Messick, and C.M. Guilliams 2021. Harpagonella, in Jepson Flora Project (eds.) Jepson eFlora, Revision 9, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=10472.

Guilliams, C.M., K. Hasenstab-Lehman, J. Bailey, M. Bailey. 2021. Noteworthy collection, California, Cyrtomium falcatum, Santa Cruz Island. Madroño 68(2): 67-68.

Guilliams, C.M., K.E. Hasenstab-Lehman, J. Lesage, K. Etter, & D. Knapp. 2021. Gap Analysis of the California Channel Islands: Vascular Plants. Santa Barbara Botanic Garden, Santa Barbara, California. 56 pages.

C.M. Guilliams, K. Hasenstab-Lehman 2021. Post-fire surveys and threat assessment for rare Dudleya taxa within the 2018 Woolsey Fire Burn Scar. Santa Barbara Botanic Garden, Santa Barbara, CA. 113 pages.

C.M. Guilliams, K. Hasenstab-Lehman 2021. Conservation genomics of the endangered Indian Knob mountainbalm (Eriodictyon altissimum, Namaceae). Santa Barbara Botanic Garden, Santa Barbara, CA. 27 pages.

K.E. Hasenstab-Lehman & C.M. Guilliams 2021. Checklist of the Vascular Flora of Santa Rosa Island, California, Version 1. Originally published online February 22, 2021, updated continually thereafter. www.cch2.org.

K.E. Hasenstab-Lehman & C.M. Guilliams 2021. Checklist of the Vascular Flora of San Miguel Island, California, Version 1. Originally published online February 16, 2021, updated continually thereafter. www.cch2.org.

Guilliams, C.M. & K.E. Hasenstab-Lehman 2021. Checklist of the Vascular Flora of Santa Barbara Island, California, Version 1. Originally published February 12, 2021, updated continually thereafter. www.cch2.org.

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

Yost, J.M., and 39 others, including C.M. Guilliams and G.A. Wahlert. 2020. The California Phenology Collections Network: using digital images to investigate phenological change in a biodiversity hotspot. Madroño 66(4): 130-141.

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.

Hasenstab-Lehman, 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. www.cch2.org

Guilliams, C.M. 2020. Gruvelia. For: The Flora of Oregon, Corvallis, OR.

Guilliams, C.M. 2020. Sonnea. For: The Flora of Oregon, Corvallis, OR.

Guilliams, C.M. and R.B. Kelley. 2020. Pectocarya. For: The Flora of Oregon, Corvallis, OR.

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.

Schlising, R., E. Gottschalk Fisher, C.M. Guilliams, & B. Castro eds. 2019. Vernal Pool Landscapes: Past, Present, and Future. Studies from the Herbarium, Number 20, California State University, Chico.

Escudero, N., J. Gasca-Pineda, R. Bello, C.M. Guilliams, & M.C. Arteaga 2019. Genetic and phenotypic diversity of Branchinecta sandiegonensis in the vernal pools of Baja California, México. Zootaxa 4646(1): 145-163.

Guilliams, C.M. 2019. Reconsidering northern and southern taxa of island mallow (Malva assurgentiflora, Malvaceae) and their conservation status on the California Channel Islands. Phytoneuron, 2019-43: 1-13.

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.

Carter, B.E., W.F. Hoyer, III, J. Dunn, S. Junak, & C.M. Guilliams 2018. New additions to the flora of San Nicolas Island, Ventura County, California. Aliso 36: 1-6.

Carter, B.E. & C.M. Guilliams 2018. Biogeographic patterns among seed-bearing and spore-bearing plants across the California Channel Islands. Western North American Naturalist 78(4): 699-710.

Randall, J.R., K.McEachern, J. Knapp, P. Power, S. Junak, K. Gill, D. Knapp, & M. Guilliams. 2018. Informing our successors: What botanical information for Santa Cruz Island will researchers and conservation managers in the century ahead need the most? Western North American Naturalist 78(4): 888-901.

Guilliams, C.M. 2018. Naval Base Ventura County, San Nicolas Island Erosion Control Program Final Report: Results of surveys for Dithyrea maritima on San Nicolas Island. Cooperative Agreement Number N62473-14-2-00015. Unpublished report. Santa Barbara, California.

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.

Schneider, H.E., S.E. Termondt, & C.M. Guilliams. 2018. Rare plant surveys and conservation seed collections in the California Floristic Province in Baja California, Mexico final report. Unpublished report, Santa Barbara Botanic Garden. 13 pp.

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.

Carlquist, S. & C.M. Guilliams 2017. Distinctive wood anatomy of the root-parasitic family Lennoaceae (Boraginales). IAWA Journal 38 (1): 3-12.

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.

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.

Simpson, M.G., L. Johnson, T. Villaverde, & C.M. Guilliams 2017. American amphitropical disjunct plants: insights and recent evidence. American Journal of Botany, Special Issue on American Amphitropical Disjunction, 104: 1600-1650.

Simpson, M.G., C.M. Guilliams, & L. Johnson 2017. Patterns and processes of American amphitropical disjunctions: new insights. American Journal of Botany, Special Issue on American Amphitropical Disjunction, 104: 1597-1599.

Guilliams, C.M., B.E. Carter, M.L. Ceceña Sánchez, J. Delgadillo, B. Holzman, S. Junak, D. Knapp, L.L. Mendoza, & S. Vanderplank. 2017. The remarkable flora of California Islands. Fremontia 45(3): 5-11. https://grownatives.cnps.org/2017/12/07/islands-of-the-californias/.

Schlising, R., E. Gottschalk Fisher, & C.M. Guilliams eds. 2016. Vernal Pools in Changing Landscapes. Studies from the Herbarium, Number 18, California State University, Chico.

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.

Dvorak, T.M, A. Catalano, & C.M. Guilliams. 2016. Monitoring within non-native ungulate enclosures documents the inherent size of Crocanthenum greenei (Cistaceae). Phytokeys 70: 11-16 (doi; 10.3897/phytokeys.70.9363).

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.

Guilliams, C.M., T. Jang, & B.G. Baldwin 2016. Molecular and morphological evidence for recognition of two species within Harpagonella (Amsinckiinae, Boraginaceae). Phytokeys 70: 17-30 (doi: 10.3897/phytokeys.70.9053).

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.

Schneider, A.C., W.A. Freyman, C.M. Guilliams, Y.P. Springer, & B.G. Baldwin 2016. Pleistocene radiation of the serpentine-adapted genus Hesperolinon and other divergence times in Linaceae (Malpighiales). American Journal of Botany 103: 221-232.

Guilliams, C.M. 2016. Madroño Vol. 63 Dedication to Michael G. Simpson. Madroño 63(1): 1-2.

Wilken, D. 2016. Rarity, threats, and the conservation status of California geophytes. Fremontia 44: 20-26.

Felger, R.S., S. Rutman, C.M. Guilliams, & J. Malusa 2015. Ajo Peak to Tinajas Altas: Flora of Southwestern Arizona: Part 10, Eudicots: Berberidaceae, Bignoniaceae, and Boraginaceae. Phytoneuron 2015-1: 1-60.

Guilliams, C.M. 2015. The Lichens of the Channel Islands: new book project uses Garden herbarium. Ironwood 23 (2): 3.

Guilliams, C.M. 2015. The Flora of Santa Catalina Island: A partnership between the Santa Barbara Botanic Garden and the Catalina Island Conservancy. Ironwood 22 (4): 4-5.

Guilliams, C.M. & J.M. Miller 2014. Calandrinia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16615, accessed on Dec 23 2014.

Guilliams, C.M. & J.M. Miller 2014. Calyptridium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16845, accessed on Dec 23 2014.

Corona, G., C.M. Guilliams & S. Vanderplank 2014. Evaluación del riesgo de extinción de Centromadia perennis Greene de acuerdo al numeral 5.7 de la NOM-059-SEMARNAT-2010. Prepared for Sociedad de Plantas Nativas de Baja California. 17 pages.

Corona, G., C.M. Guilliams & S. Vanderplank 2014. Evaluación del riesgo de extinción de Adenothamnus validus (Brandegee) D.D. Keck de acuerdo al numeral 5.7 de la NOM-059-SEMARNAT-2010. Prepared for Sociedad de Plantas Nativas de Baja California. 20 pages.

Corona, G., C.M. Guilliams & S. Vanderplank 2014. Evaluación del riesgo de extinción de Chenopodium flabellifolium Standley de acuerdo al numeral 5.7 de la NOM-059-SEMARNAT-2010. Prepared for Sociedad de Plantas Nativas de Baja California. 21 pages.

Corona, G., C.M. Guilliams & S. Vanderplank 2014. Evaluación del riesgo de extinción de Dudleya anthonyi Rose de acuerdo al numeral 5.7 de la NOM-059-SEMARNAT-2010. Prepared for Sociedad de Plantas Nativas de Baja California. 21 pages.

Corona, G., C.M. Guilliams & S. Vanderplank 2014. Evaluación del riesgo de extinción de Eryngium aristulatum Jeps. var. parishii (J.M. Coult. y Rose) Mathias y Constance de acuerdo al numeral 5.7 de la NOM-059-SEMARNAT-2010. Prepared for Sociedad de Plantas Nativas de Baja California. 24 pages.

Corona, G., C.M. Guilliams & S. Vanderplank 2014. Evaluación del riesgo de extinción de Navarretia fossalis Moran, de acuerdo al numeral 5.7 de la NOM-059-SEMARNAT-2010. Prepared for Sociedad de Plantas Nativas de Baja California. 24 pages.