Index Kewensis plantarum phanerogamarum. nomina et synonyma omnium generum et specierum ab initio anni MDCCCCXXVI usque ad finem anni MDCCCCXXX complectens Supplementum octavum - Royal Botanic Gardens, Kew. (e prelo Clarendoniano)

Mesembryanthemum and some new genera separated from it - Brown, Nicholas Edward, 1849 -1934 (s.n.], 1921)