Roots fibrous. Sterile stems absent. Flowering stems branched from base, erect, 1.5-3 cm. Leaf blade linear to lanceolate-ovate, 2-5 × 0.7-1.5 mm, base spurred, apex obtuse to subacute. Cyme corymbiform, few flowered, rarely 1-flowered. Flowers unequally 5-merous; pedicel slender, 0.5-1 mm. Sepals green, suboblong, ca. 3 × 1 mm, base spurless, apex acuminate. Petals yellow, narrowly ovate-oblong, ca. 5.4-1.3 mm, base connate for ca. 1.5 mm and shortly clawed, apex subacuminate. Stamens 10, equal; antesepalous ones ca. 1.2 mm, inserted at basal suture of petals; antepetalous ones inserted ca. 1.5 mm from petal base; anthers oblong-reniform. Nectar scales ca. 1 mm, apex obtuse. Carpels erect, lanceolate, base connate for ca. 1 mm; ovules many. Seeds oblong-ovoid, densely mammillate. Fl. Aug-Sep, fr. Sep-Oct.
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