Literature Based Distribution
Region
Country
Mapping will be based on a standard reference mark based on political units when available.
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| Guatemala | | | Davidse, G., M. Sousa-Peña, S. Knapp & F. Chiang Cabrera | 2014 | Asteraceae | Fl. Mesoamer. | 5(2): ined. |
| Honduras | | | Nelson, C. H. | 2008 | (none) | Cat. Pl. Vasc. Honduras | 1–1576 |
| Mexico | | | Davidse, G., M. Sousa-Peña, S. Knapp & F. Chiang Cabrera | 2014 | Asteraceae | Fl. Mesoamer. | 5(2): ined. |
| United States | | | Davidse, G., M. Sousa-Peña, S. Knapp & F. Chiang Cabrera | 2014 | Asteraceae | Fl. Mesoamer. | 5(2): ined. |
| United States | | | USDA, NRCS | 2007 | The PLANTS Database (http://plants.usda.gov). National Plant Data Center, Baton Rouge. | | |
| United States | | | Hickman, J. C. | 1993 | (none) | The Jepson Manual: Higher Plants of California | 1–1400 |
| United States | California | | Hickman, J. C. | 1993 | (none) | The Jepson Manual: Higher Plants of California | 1–1400 |
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