Snow N, Trost M, Pruski JF. A first report of Xeranthemum annuum (Asteraceae: Cardueae) in Montana and North America (U.S.A.). J. Bot. Res. Inst. Texas [Internet]. 2025 Sep. 23 [cited 2025 Sep. 27];19(3):335-40. Available from: https://journals.brit.org/jbrit/article/view/1429