Mesembryanthemum tomentosum, synonyms including Brownanthus pubescens, is a species of plant in the family Aizoaceae.

[3] Its natural habitats are dry savanna and rocky areas.

[1] The species was first described by Nicholas Edward Brown in 1928 as Trichocyclus pubescens.

A molecular phylogenetic study in 2007 concluded that Brownanthus was embedded in Mesembryanthemum, which as then circumscribed was not monophyletic.

Accordingly, all the species of Brownanthus were transferred to an enlarged Mesembryanthemum.