Cuscuta gronovii Willd. ex Roem. & Schult., Syst. Veg. 6:205. 1820 var. gronovii [NOT A TYPE] The voucher is: Canada, Quebec, Cté. de Chauveau, St. Augustin, 14 Aug 1975, Pérusse 75-391 (QFA). The type is Willdenow 3160-10 (B). Want to know more about its taxonomy? evolution? biology?