For Ononis
Sell, P., and G. Murrell. 2009. Flora of Great Britain and Ireland. Vol. 3: Mimosaceae – Lentibulariaceae. Cambridge Univ. Press. 595 pp.
Small, E. 2023a. Ononis. Pp. 975-977. In Flora of North America Editorial Committee. 2023b. Flora of North America north of Mexico. Volume 11.2, Magnoliophyta: Fabaceae, part 2. Oxford Univ. Press, New York, NY. 543-1108 pp.
Stace, C. 2021. New flora of the British Isles, fourth edition, October 2021 reprinting with corrections. C & M Floristics, Suffolk, U.K. 1266 pp.
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