1.
Magee AR, BOATWRIGHT JS, MUCINA L. Four new species of <em>Ursinia</em> (Asteraceae, Anthemideae) from South Africa, with an updated key to the genus in Namaqualand. Phytotaxa [Internet]. 2014 Aug. 29 [cited 2025 Mar. 19];177(3):137–145. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.177.3.1