Martínez-Azorín, M., Crespo, M. B., Dold, A. P., Wetschnig, W., Pinter, M., Pfosser, M. and van Jaarsveld, E. (2013) “Sagittanthera (Hyacinthaceae, Urgineoideae), a new buzz pollinated genus from the Eastern Cape Province of South Africa”, Phytotaxa. Auckland, New Zealand, 98(2), pp. 43–54. doi: 10.11646/phytotaxa.98.2.2.