is the only species of a monotypic genus. Plants produce one stem or several. Stems grow upwards, do not divide, and tend to be hairless, though they may have a light covering of finely branched hairs, this more likely towards the base. The grey-green leaves grow most strongly at the base, but also along the stem (numbering between 5 and 12), and they are always covered by the branched hairs, most densely for those nearer the ground. Leaves are generally narrow; those at the base tend to be widest above the middle, while stem leaves are widest at the middle or slightly below.
Flowers form in a compact cluster on top of the stem, becoming more open when in fruit. The four purplish, hairless, oblong sepals are around a fifth of an inch long, while the four pink-purple petals are up to three times this length. Six stamens project just a little way out of the corolla throat, topped by yellow anthers.