Sphalmanthus lignescens L.Bolus in J. S. African Bot. 29: 137. 1963
Sphalmanthus lignescens in J. S. African Bot. 29: 137. 1963
is basionym for Mesembryanthemum lignescens in Taxon 56: 751. 2007
is basionym for Phyllobolus lignescens in Bot. Jahrb. Syst. 119: 179. 1997