Balderis, E., C. M. Guilliams, K. E. Hasenstab-Lehman, M. E. Mabry, and M. G. Simpson. 2019. Amsinckiinae Working Group: Nutlet diversity of Amsinckiinae
in western North America. Poster (pdf; png) presented at Botany 2019. Tucson, Arizona.
Chacón, J., F. Luebert, H. Hilger, S. Ovcinnikova, F. Selvi, L. Cecchi, C. M. Guilliams, K. Hasenstab-Lehman, K. K. Sutorý, M. G. Simpson, and 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 3: 523-546.
Guilliams, C. M., B. A. Veno, M. G. Simpson, and R. B. Kelley. 2013. Pectocarya anisocarpa, a new species of Boraginaceae from western North America,
with a revised dichotomous key and photographic atlas for the genus in the region. Aliso 31: 1-13.
Guilliams, C. M., T. Jang, and B. G. Baldwin. 2016. Molecular and morphological evidence for recognition of two species within Harpagonella (Amsinckiinae, Boraginaceae). PhytoKeys 70: 17-30.
Guilliams, M. C., K. Hasenstab-Lehman, M. Mabry, and M. G. Simpson. 2017. Memoirs of a frequent flier: Phylogenomics reveals 18 long-distance dispersals
between North America and South America in the popcorn flowers (Amsinckiinae, Boraginaceae). American Journal of Botany 104: 1717-1728.
Guilliams, C. M., K. Hasenstab-Lehman, and B. G. Baldwin. 2020. Nomenclatural changes in western North American Amsinckiinae (Boraginaceae). Novon 28: 51-59.
Hargrove, L. and M. G. Simpson. 2003. Ultrastructure of heterocolpate pollen in Cryptantha (Boraginaceae). International Journal of Plant Sciences 164: 137-151.
Hasenstab-Lehman, K. E. and M. G. Simpson. 2012. Cat’s eyes and popcorn flowers: Phylogenetic systematics of the genus Cryptantha s.l.
(Boraginaceae). Systematic Botany 37: 738–757.
Hasenstab-Lehman, K. E. 2017. Phylogenetics of the borage family: Delimiting Boraginales and assessing closest relatives. Aliso: A Journal of Systematic
and Evolutionary Botany 31: 41-49.
Luebert, F., L. Cecchi, M. W. Frohlich, M. Gottschling, C. M. Guilliams, K. E. Hasenstab-Lehman, H. H. Hilger, J. S. Miller, M. Mittelbach, M. Nazaire, M. Nepi,
D. Nocentini, D. Ober, R. G. Olmstead, F. Selvi, M. G. Simpson, K. Sutorý, B. Valdés, G. K. Walden, and M. Weigend. 2016. Familial classification of the
Boraginales.
Taxon 65: 502–522 .
Mabry, M. E., R. A. Dowdy, L. M. Simpson, J. P. Rebman, and M. G. Simpson. 2016. Taxonomy of the winged popcorn flower: Cryptantha pterocarya (Boraginaceae). Phytotaxa 253: 97-130.
Mabry, M. E. and M. G. Simpson. 2018. Evaluating the monophyly and biogeography of Cryptantha (Boraginaceae). Systematic Botany 43: 53-76.
Moroni, P., A. Martínez, and M. G. Simpson. 2021. Nomenclatural revision of Cryptantha (Boraginaceae s. str.) names linked to South American taxa. PhytoKeys 181:29-47.
https://doi.org/10.3897/phytokeys.181.69740
Moroni, P. and M. G. Simpson. 2022. Revisión taxonómica del genero Johnstonella (Boraginaceae s. str.) en la Argentina. Darwiniana Nueva Serie 10:260–270.
http://www.ojs.darwin.edu.ar/index.php/darwiniana/article/view/1046
Moroni, P. and M. G. Simpson. 2023a. Flora Argentina: Cryptantha (Boraginaceae). Darwiniana 19:17–24.
Moroni, P. and M. G. Simpson. 2023b. Flora Argentina: Greeneocharis (Boraginaceae). Darwiniana 19:36–37.
Moroni, P. and M. G. Simpson. 2023c. Flora Argentina: Johnstonella (Boraginaceae). Darwiniana 19:56–58.
Rebman, J. P. and M. G. Simpson. 2022. Three new species of Cryptantha (Boraginaceae) from the Southern Channel Islands of California. Madroño 69.
Ripma, L. A., M. G. Simpson, and K. Hasenstab-Lehman. 2014. Geneious! Simplified genome skimming methods for phylogenetic systematic studies:
A case study in Oreocarya (Boraginaceae). Applications in Plant Sciences 2: 1400062.
Simpson, M. G. and K. E. Hasenstab. 2009. Cryptantha of Southern California. Crossosoma 35: 1-59.
Simpson, M. G. and J. P. Rebman. 2013. A new species of Cryptantha (Boraginaceae) from the Sierra de San Pedro Mártir, Baja California, Mexico. Madroño 60:35-45.
Simpson, M. G., J. P. Rebman, K. E. Hasenstab-Lehman, C. M. Guilliams, and P. O. McConnell. 2013. Cryptantha wigginsii (Boraginaceae): A presumed extinct species rediscovered.
Madroño 60: 24-34.
Simpson, M. G., R. Dowdy, J. P. Rebman, R. B. Kelley, and L. M. Simpson. 2014. Recognition of two species in Eremocarya (Boraginaceae):
Evidence from fornix bodies, nutlets, corolla size, and biogeography. Madroño 61: 259–275.
Simpson, M. G., K. Hasenstab-Lehman, and R. B. Kelley. 2014. Typification of the name Johnstonella (Boraginaceae). Taxon 63: 930-931.
Simpson, M. G., L. M. Simpson, and J. P. Rebman. 2016. A new, large-flowered variety of Eremocarya micrantha (Boraginaceae). Madroño 63: 39-54.
Simpson, M. G. and R. B. Kelley. 2017. Cryptantha nevadensis var. rigida elevated to species with a new name, C. juniperensis. Phytotaxa 295: 227-236.
Simpson, M. G., C. M. Guilliams, K. E. Hasenstab-Lehman, M. E. Mabry, and L. Ripma. 2017. Phylogeny of the popcorn flowers: Use of genome skimming to
evaluate monophyly and interrelationships in subtribe Amsinckiinae (Boraginaceae). Taxon 66 :1406–1420.
Simpson, M. G., M. E. Mabry, and K. Hasenstab-Lehman. 2019. Transfer of four species of Cryptantha to the genus Johnstonella (Boraginaceae). Phytotaxa 425: 279–289.
Simpson, M. G., J. Stephens, and S. Yang. 2020. Noteworthy Collections: Johnstonella angelica (I.M.Johnston) Hasenstab & M.G.Simpson. Madroño 67: 5–8.
Simpson, M.G. & J. P. Rebman. 2021a. A new species of Cryptantha restricted to dunes in northwestern Baja California, Mexico. Madroño 68: 126-136.
Simpson, M. G. and J. P. Rebman. 2021b. Research in Boraginaceae: A new variety of Cryptantha maritima, Cryptantha pondii resurrected, and Johnstonella echinosepala transferred back to Cryptantha.
Phytotaxa 509:185–210.
Simpson, M. G., K. E. Hasenstab-Lehman, M. E. Mabry, and R. B. Kelley. 2022. Jepson eFlora: Cryptantha. Jepson Flora Project (eds.) 2022. https://ucjeps.berkeley.edu/eflora
Simpson, M. G., K. Hasenstab-Lehman, M. Mabry, and M. Muñoz. 2022. Johnstonella punensis (Boraginaceae), a new species endemic to the dry Puna of Chile.
PhytoKeys 197:149–164. https://doi.org/10.3897/phytokeys.197.84833
Simpson, M. G. and L. Gross. 2023. Noteworthy Collection: Cryptantha crassisepala (Torrey & A.Gray) Greene var. elachantha I.M.Johnston. Madroño 70:4–8. https://doi.org/10.3120/0024-9637-70.1.4
