Herbs 3.5-5.5 cm tall, glabrous. Stems branched from base and middle, erect. Leaf blade lanceolate, 3-4(-7) × 0.5-1(-2) mm, apex extended into a pale bristle. Flowers in very condensed axillary cymes shorter than subtending leaf, 3- or 4(or 5)-merous on densely leafy axillary shoots usually shorter than subtending leaves; pedicel filiform, to 4 mm. Sepals linear-lanceolate, ca. 1.5 × 0.2 mm. Petals yellow, lanceolate, ca. 1 mm. Stamens to 1 mm. Nectar scales linear to spatulate, ca. 0.3 mm. Styles short. Follicle 2-seeded. Seeds brown, oblong, 0.4-0.5 mm. Fl. Sep.