Description from Flora of China
Hilliella yixianensis Y. H. Zhang, Acta Phytotax. Sin. 33: 94. 1995.
Annuals or biennials. Stems erect, 40-90 cm tall, striate, glabrous or rarely pilose with simple trichomes. Basal and median cauline leaves compound, with 2 or 3 pairs of lateral leaflets; petiole 0.5-1.5 cm; leaflets thin papery, ovate or elliptic, 1-4 × 0.8-1.7 cm, hispidulous, base obtuse or cuneate, margin obtusely dentate with the teeth mucronate, apex acute; petiolule to 5 mm; uppermost cauline leaves smaller, with fewer teeth and lateral leaflets. Racemes terminal and lateral, elongated considerably in fruit; rachis conspicuously flexuous, slender. Fruiting pedicels slender, 5-6 mm. Sepals elliptic, ca. 1.5 × 0.5 mm, spreading. Petals white, spreading, ovate, ca. 2.5 × 1.5 mm. Fruit subglobose-obovoid, ca. 3.5 × 2.5 mm; valves papillate. Seeds 2(-4) per fruit, ovoid, 1.5-2 mm. Fr. Jul. 2n = 42*.
* Roadsides; ca. 200 m. Anhui.