Orbea (Haworth) Leach, Syn. Pl. Succ. 37, 1812

Orbea anguinea Haworth, Syn. Pl. Succ. 41, 1812

Orbea bisulca Haworth, Syn. Pl. Succ. 39, 1812

Orbea bufonia Haworth, Syn. Pl. Succ. 40, 1812

Orbea ciliata (Thunberg) L.C. Leach, Kirkia, 10 (1): 291, 1975

Orbea clypeata Haworth, Suppl. Pl. Succ. 13,

Orbea conspurcata Schult., Syst. 6. 834,

Orbea cooperi (N.E. Brown) L.C. Leach, Kirkia, 10 (1): 291, 1975

Orbea curtisii Haworth, Syn. Pl. Succ. 40,

Orbea decora Steud., Nom. ed. 2. 2. 222,

Orbea halipedicola L.C. Leach, Excelsa, Taxon. Ser., 1: 40, 1978

Orbea halipedicola ssp. septentrionalis L.C. Leach, Excelsa, Taxon. Ser., 1: 43, 1978

Orbea inodora Haworth, Suppl. Pl. Succ. 12,

Orbea irrorata (Masson) L.C. Leach, Excelsa, Taxon. Ser., 1: 27, 1978

Orbea lepida Haworth, Suppl. Pl. Succ. 13,

Orbea longidens (N.E. Brown) L.C. Leach, Kirkia, 10 (1): 290, 1975

Orbea macloughlinii (Verdoorn) L.C. Leach, Kirkia, 10 (1): 291, 1975

Orbea maculata (N.E. Brown) L.C. Leach, Excelsa, Taxon. Ser., 1: 49, 1978

Orbea maculosa Haworth, Syn. Pl. Succ. 37,

Orbea marginata Schult., Syst. 6. 834; et G. Don, Gen. Syst. 4. 120,

Orbea marmorata Schult., Syst. 6. 834,

Orbea mixta Haworth, Syn. Pl. Succ. 38,

Orbea mutabilis G. Don, Loud. Hort. Brit. 96; Gen. Syst. 4. 121,

Orbea namaquensis (N.E. Brown) L.C. Leach, Kirkia, 10 (1): 290, 1975

Orbea normalis Schult., Syst. 4. 120,

Orbea orbicularis Haworth, Syn. Pl. Succ. 40,

Orbea paradoxa (Verdoorn) L.C. Leach, Excelsa, Taxon. Ser., 1: 55, 1978

Orbea picta Haworth, Syn. Pl. Succ. 42,

Orbea planiflora G. Don, Gen. Syst. 4. 120,

Orbea prognatha (Bally) L.C. Leach, Kirkia, 10 (1): 290, 1975

Orbea pulchella (Masson) L.C. Leach, Kirkia, 10 (1): 290, 1975

Orbea quinquenervia Haworth, Syn. Pl. Succ. 38,

Orbea rangeana (Dinter & Berger) L.C. Leach, Excelsa, Taxon. Ser., 1: 51, 1978

Orbea retusa Haworth, Syn. Pl. Succ. 41,

Orbea rugosa G. Don, Loud. Hort. Brit. 96,

Orbea sect. Codonidium L.C. Leach, Excelsa, Taxon. Ser., 1: 6., 1978

Orbea sect. Stultitia (Phillips) L.C. Leach, Excelsa, Taxon. Ser., 1: 6, without basionym ref., 1978

Orbea semota (N.E.Br.) L.C. Leach, Kirkia, 10 (1): 290, 1975

Orbea speciosa L.C. Leach, Excelsa, Taxon. Ser., 1: 33, 1978

Orbea subsect. Carentilobae L.C. Leach, Excelsa, Taxon. Ser., 1: 6., 1978

Orbea subsect. Confluentilobae L.C. Leach, Excelsa, Taxon. Ser., 1: 6., 1978

Orbea subsect. Exstantes L.C. Leach, Excelsa, Taxon. Ser., 1: 6., 1978

Orbea subsect. Inspissatae L.C. Leach, Excelsa, Taxon. Ser., 1: 6., 1978

Orbea subsect. Librilobae L.C. Leach, Excelsa, Taxon. Ser., 1: 6., 1978

Orbea tapscottii (Verdoorn) L.C. Leach, Kirkia, 10 (1): 291, 1975

Orbea trisulca G. Don ex Steud., Nom. ed. 2. 2. 222,

Orbea umbracula (Henderson) L.C. Leach, Kirkia, 10 (1): 291, 1975

Orbea variegata Haworth, Syn. Pl. Succ. 40,

Orbea variegata v. laeta  

Orbea verrucosa (Masson) L.C. Leach, Kirkia, 10 (1): 290, 1975

Orbea verrucosa v. fucosa (N.E. Brown) L.C. Leach, Excelsa, Taxon. Ser., 1: 25 (1978),

Orbea wendlandiana Schult., Syst. 6. 834; G. Don, Gen. Syst. 4. 120,

Orbea woodfordiana Haworth, Syn. Pl. Succ. 42,

Orbea woodii (N.E. Brown) L.C. Leach, Kirkia, 10 (1): 290, 1975