Dwarf annual, 3-6 cm tall. Stem erect to ascending, slender, glabrous. Leaves basally crowded, 2-3-pairs on the flowering stem, 8-12 x 3-5 mm, lanceolate. All leaves with long white hairs. Flowers solitary. Calyx 7-9 mm, cylindrical, clavate, inflated in fruit, membranous, glabrous; teeth triangular, acute, ciliate. Petals white, c. 10 mm, limb slightly bilobed; claw auriculate. Coronal scales oblong. Carpophore 2.5 mm, glabrous. Capsule c. 10 mm, ovoid, partially exserted from the calyx.