Windham & Al-Shehbaz (S.L.Welsh) 2006 - Windham MD, Al-Shehbaz IA (2006) NEW AND NOTEWORTHY SPECIES OF BOECHERA (BRASSICACEAE) I: SEXUAL DIPLOIDS. Harvard Papers in Botany 11: 61-88. doi: 10.3100/1043-4534(2006)11[61:nansob]2.0.co;2.