Petrocodon tenuitubus W. H. Chen, F. Wen & Y. M. Shui
Petrocodon Hance Herbs perennial. Rhizomes 1.0–3.0 cm long, 0.8–1.8 cm in diam. Leaves 5–15, basal; petiolate 0.7–3.5 cm, adaxially green, abaxially reddish-brown, strigose. Leaf blade ovate to orbicular, herbaceous, 2.6–6.8 × 2.0–5.1 cm, obtuse at apex, cordate symmetrically or asymmetrically at base,...