References

For Lithospermum

Al-Shehbaz, I.A. 1991. The genera of Boraginaceae in the southeastern United States. J. Arnold Arb. Suppl. Series 1: 1-169. Google Scholar

Cochrane, T.S. 1976. Taxonomic status of the Onosmodium molle complex (Boraginaceae) in Wisconsin. Michigan Botanist 15: 103-110. Google Scholar

Cohen, J.I. 2022. Notes on the nomenclature of Lithospermum (Boraginaceae). J. Bot. Res. Inst. Texas 16(2): 373-375. Google Scholar

Cohen, J.I., and J.I. Davis. 2009. Nomenclatural changes in Lithospermum (Boraginaceae) and related taxa following a reassessment of phylogenetic relationships. Brittonia 61(2): 101-111. Google Scholar

Cusick, A.W. 1985. Lithospermum (Boraginaceae) in Ohio, with a new taxonomic rank for Lithospermum croceum Fernald. Mich. Botanist 24: 63-69. Google Scholar

Turner, B.L. 1995a. Synopsis of the genus Onosmodium (Boraginaceae). Phytologia 78: 39-60. Google Scholar

Weakley, A.S., R.J. LeBlond, B.A. Sorrie, C.T. Witsell, L.D. Estes, K.G. Mathews, A. Ebihara, and K. Gandhi. 2011. New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. J. Bot. Res. Inst. Texas 5: 437-455. Google Scholar

Weigend, M., F. Selvi, D.C. Thomas, and H.H. Hilger. 2016. Boraginaceae. In Kadereit, J.W., and V. Bittrich. 2016. The families and genera of flowering plants. XIV. Flowering plants – Eudicots – Aquifoliales, Boraginales, Bruniales, Dipsacales, Escalloniales, Garryales, Paracryphiales, Solanales (except Convolvulaceae), Icacinaceae, Metteniusaceae, Vahliaceae. Springer, Berlin. 412 pp. Google Scholar

Weigend, M., M. Gottschling, F. Selvi, and H.H. Hilger. 2009. Marbleseeds are gromwells – Systematics and evolution of Lithospermum and allies (Boraginaceae tribe Lithospermeae) based on molecular and morphological data. Molec. Phylogen. Evol. 52: 755-768. Google Scholar