Chapman, A. W. (1860). Flora of the Southern United States; Containing Abridged Descriptions of the Flowering Plants and Ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi and Florida: Arranged According to the Natural System. , available online athttps://www.biodiversitylibrary.org/page/7405705#page/7/mode/1up page(s): 252 [details]
Compositae Working Group (CWG) (2025). Global Compositae Database. Lactuca elongata var. integrifolia Chapm.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1164159 on 2025-09-12
original descriptionChapman, A. W. (1860). Flora of the Southern United States; Containing Abridged Descriptions of the Flowering Plants and Ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi and Florida: Arranged According to the Natural System. , available online athttps://www.biodiversitylibrary.org/page/7405705#page/7/mode/1up page(s): 252 [details]