References
For Arctotis
Mahoney, A.M. 2006. Arctotis. In Flora of North America Editorial Committee. 2006a. Flora of North America north of Mexico. Volume 19, Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford Univ. Press, New York, NY. 579 pp. Google Scholar
McKenzie, R.J., E.M. Muller, A.K.W. Skinner, P.O. Karis, and N.P. Barker. 2006. Phylogenetic relationships and generic delimitation in subtribe Arctotidineae (Asteraceae: Arctotideae) inferred by DNA sequence data from ITS and five chloroplast regions. Amer. J. Botany 93: 1222-1235. Google Scholar
Norlindh, T. 1965. Arctotis venusta T. Norl. spec. nova, an ornamental plant from southern Africa. Botaniska Notiser 118:403-411. Google Scholar