Oscularia guthrieae (L.Bolus) H.E.K.Hartmann in Bradleya 16: 77. 1998 sec. Buys 2017
- ≡Mesembryanthemum guthrieae L.Bolus in Ann. Bolus Herb. 4: 101. 1927 syn. sec. Buys 2017
- ≡Lampranthus guthrieae (L.Bolus) N.E.Br. in Gard. Chron., ser. 3, 87: 212. 1930 syn. sec. Buys 2017