Goldblatt P, Manning JC. Two new subspecies of Dietes (Iridaceae: Iridoideae), Dietes iridioides subsp. angolensis from Angola and Dietes bicolor subsp. armeniaca from eastern South Africa, with notes and range extensions for Dietes butcheriana and Dietes iridioides. ABC. 2015;45(1). Accessed May 2, 2026. https://mail.abcjournal.org/index.php/abc/article/view/161