Species Plantarum Programme
Published volumes:
http://speciesplantarum.net/published-volumes-species-plantarum-flora-world

1) Staminodes (petals) pink. Hypanthium abruptly narrowed into peduncle. Receptacle flat. Upper leaves distinctly saber-shaped: C. (affinis) acinaciformis

1A) Staminode (petals) pale yellow (rarely yellow), sometimes pale pink when senescing. Hypanthium gradually narrowed. Receptacle raised. All leaves not saber-shaped: C. edulis subsp. edulis

References:
Wisura W, Glen HF (1993) The South African species of Carpobrotus (Mesembryanthema-Aizoaceae). Contr Bolus Herb 15: 76–107.

1) Staminodes (petals) pink. Hypanthium abruptly narrowed into peduncle. Receptacle flat. Upper leaves distinctly saber-shaped: C. (affinis) acinaciformis

1A) Staminode (petals) pale yellow (rarely yellow), sometimes pale pink when senescing. Hypanthium gradually narrowed. Receptacle raised. All leaves not saber-shaped: C. edulis subsp. edulis

C. (affinis) acinaciformis
https://www.inaturalist.org/observations/26048235

C. edulis subsp. edulis:
https://www.inaturalist.org/observations/26048296