Last edited: April 12, 2024

UNITED STATES AND CANADA:

• Smith, Edwin B. 1976. "A Biosystematic Survey of Coreopsis in Eastern United States and Canada". (Can be found at this link: https://www.biodiversitylibrary.org/partpdf/162825 or https://www.biodiversitylibrary.org/page/10009068#page/132/mode/1up)
• Schilling, Edward E., et al. "Coreopsis Bakeri (Asteraceae; Coreopsideae), a New Species from Florida, USA." Phytotaxa, vol. 231, no. 2, 20 Oct. 2015, p. 175, https://doi.org/10.11646/phytotaxa.231.2.6.
• Sorrie, Bruce A., et al. “IDENTIFICATION, DISTRIBUTION, AND HABITAT OF COREOPSIS SECTION EUBLEPHARIS (ASTERACEAE) AND DESCRIPTION OF A NEW SPECIES.” Journal of the Botanical Research Institute of Texas, vol. 7, no. 1, 2013, pp. 299–310. JSTOR, http://www.jstor.org/stable/24621075.
• Smith, Edwin B. “BIOSYSTEMATIC STUDY AND TYPIFICATION OF THE CALIFORNIEN COREOPSIS (COMPOSITAE) SECTIONS TUCKERMANNIA, PUGIOPAPPUS, AND EULEPTOSYNE.” SIDA, Contributions to Botany, vol. 10, no. 4, 1984, pp. 276–89. JSTOR, http://www.jstor.org/stable/41966667.

Mexico - South America:

• Crawford, Daniel J. “Systematic Studies on Mexican Coreopsis (Sect. Anathysana), with Special Reference to the Relationship between C. Cyclocarpa and C. Pinnatisecta.” Bulletin of the Torrey Botanical Club, vol. 97, no. 3, 1970, pp. 161–67. JSTOR, https://doi.org/10.2307/2483354.

• Mesfin Tadesse, Crawford, Daniel J., and Smith, Edwin Burnell. 1995. "New
  synonyms in Coreopsis L. and notes on C. sect. Pseudoagarista (Compositae:
  Heliantheae)." (Can be found at this link: https://www.biodiversitylibrary.org/partpdf/319676)