Mesembryanthemum subrectum Mesembryanthemum surrectum Mesembryanthemum arrectum Glottiphyllum arrectum Glottiphyllum concavum Glottiphyllum davisii Glottiphyllum parvifolium Glottiphyllum rubrostigma
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024