Cnidium japonicum Miq.

Plants perennial or biennial, 15–20 cm. Taproot elongate, 5–13 cm, or fusiform, ca. 8 mm thick. Stems several. Basal petioles 1–5(–7) cm; blade oblong-ovate, 5–6 × 2–3 cm, 1–2-pinnate; pinnae 3–4 pairs; ultimate segments oblanceolate or obovate, 5–8(–10) × 1.5–4 mm. Umbels 1–2 cm across; bracts 4–5(–8), linear, 3–5 mm; rays 6–9, 1–2 cm, unequal; bracteoles 4–5(–10), linear, 2–4 mm, nearly equal pedicels, hardly membranous margined; umbellules 8–10-flowered. Fruit subglobose, 2–3.5 × 2–3.5 mm; lateral ribs slightly broader than the dorsal. Seed face plane. Fl. Aug–Sep, fr. Sep–Oct. 2n = 20.

Seashores. Liaoning [Japan, Korea].