Petrocodon rubiginosus Y.G.Wei & R.L.Zhang
Petrocodon Hance Perennial herb, stemless. Rhizome subterete, 3–8 cm long, 5–7 mm in diam. Leaves 8–16, all basal; leaf blades herbaceous, green to zygomorphic to slightly unequal in each pair, broadly ovate to nearly rounded, 3.5–20 × 3.8–15 cm, apex...