辛加山蛇床 xin jia shan she chuang

Selinum sinchianum (K. T. Fu) C. Q. Yuan & L. B. Li.

Plants perennial, 20–35 cm. Root coniform, slender. Stem erect, unbranched, glabrous. Lower leaves petiolate; blade triangular-ovate, 2–3-pinnate; ultimate segments linear, 4–15 × 0.5–1 mm. Umbels terminal, peduncle 4–5.5 cm; bracts caducous; rays 6–11, 10–17 mm; bracteoles 8–10, linear, exceeding pedicels, scabrous at margins; umbellules 12–16-flowered; pedicels 2–4 mm. Calyx teeth obsolete. Stylopodium low-conic; styles slightly recurved, ca. 1.2 mm. Fruit oblong-ovoid, ca. 4 mm. Fl. Jun–Sep, fr. Sep–Oct.

Shady moist places. Shaanxi (Xingjia Shan).

This species is incompletely known, but differs from Selinum in the obsolete calyx teeth and the thick, slightly corky fruit ribs.