For Rhynchosia
Grear, J.W. 1978. A revision of the New World species of Rhynchosia (Leguminosae-Faboideae). Mem. New York Bot. Gard. 31: 1-168.
Isely, D. 1998. Native and naturalized Leguminosae (Fabaceae) of the United States (exclusive of Alaska and Hawaii). Monte L. Bean Life Science Museum, Brigham Young Univ., Provo, UT.
Woods, M. 2023b. Rhynchosia. Pp. 382-389. In Flora of North America Editorial Committee. 2023a. Flora of North America north of Mexico. Volume 11.1, Magnoliophyta: Fabaceae, part 1. Oxford Univ. Press, New York, NY. 541 pp.
Woods, M., and J. Key. 2009. The genus Rhynchosia (Fabaceae) in Alabama. Phytologia 91: 3-17.
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