Cuscuta leptantha Engelm., Trans. Acad. Sci. St. Louis 1: 489. 1859 [NOT A TYPE] Cuscuta leptantha Engelm., Trans. Acad. Sci. St. Louis 1: 489. 1859 [NOT A TYPE]. Voucher: MEXICO, Sonora Playa Esthela, 28°52'28 N 112°01'20, 50m, 31 Dec 2000, Van Devender & Reina-G. 2000-933 (WLU).