For Brassica
Al-Shehbaz, I.A. 1985b. The genera of Brassiceae (Cruciferae; Brassicaceae) in the southeastern United States. J. Arnold Arb. 66: 279-351.
Al-Shehbaz, I.A. 2021. Nomenclatural adjustments in Eutrema, Ceratocnemum, Rhamphospermum, and Sinapis (Brassicaceae, Cruciferae). Harvard Papers in Botany 26: 1-4.
Rollins, R.C. 1993. The Cruciferae of continental North America: systematics of the mustard family from the Arctic to Panama. Stanford Univ. Press, Stanford, CA. 976 pp.
Warwick, S.I. 2010a. Brassica. In Flora of North America Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7, Magnoliophyta: Brassicaceae to Salicaceae. Oxford Univ. Press, New York, NY. 797 pp.
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