Paiva J, Figueiredo E, Smith GF. Polygala retiefiana (Polygalaceae), a new species described from South Africa. Phytotaxa [Internet]. 2013 Jul. 15 [cited 2025 Dec. 6];117(1):30–34. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.117.1.4