Roots fibrous. Sterile stems absent. Flowering stems branched from base, erect, 6.5-14 cm; branches alternate or opposite. Leaves remote; leaf blade obovate-lanceolate to lanceolate, 1.2-1.8 cm × 1.5-5 mm, base subobtuse and spurred, apex obtuse to acute. Cyme
corymbiform, many flowered; bracts leaflike, small. Flowers unequally 5-merous; pedicel to 2 mm. Sepals green, linear to subspatulate, 2.2-7 × 0.7-2 mm, base spurless, apex subacutate. Petals greenish yellow, lanceolate, 5-6.2 × ca. 1.1 mm, base connate for 1.5-2 mm, apex long mucronate. Stamens 10; antesepalous ones ca. 1 mm; antepetalous ones 0.7-0.8 mm, inserted 1.5-2.5 mm from petal base. Nectar scales linear, 0.6-0.9 mm, apex truncate to obtuse. Carpels erect, 3.5-5 mm, mammillate, base connate for 1.2-1.5 mm, apex abruptly tapered. Seeds ovoid, winged. Fl. Aug-Sep, fr. Sep-Oct.