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Hilliardiella elaeagnoides and H. oligocephala (Asteraceae, Vernonieae), two distinct species and the description of a new variety

. Phytotaxa [Internet]. 2022 Oct. 25 [cited 2026 Feb. 5];570(1):29-42. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.570.1.3