Plants annual, with minute, tuberous bodies; periderm absent. Stems 5-10 cm. Leaves: blades gray, beige, or pink, glaucous; basal leaf blades linear or spatulate, 1-6 × 0.05-0.5 cm; cauline leaves sessile, distinct or partially connate into horn shape, blade spatulate, 0.2-4.5 cm, or subperfoliate, blade 0.2-4.5 cm wide. Inflorescences 1-bracteate; bract leaflike, 0.5-15 mm. Flowers 3-5 mm diam.; sepals 1.5-2.5 mm; petals white or pinkish, 2-5 mm; ovules 3. Seeds 0.5-1 mm, tuberculate; elaiosome inserted in wide notch of seed coat, 0.5-1 mm. 2n = 16, 32, 48.