Pleurospermum longipetiolatum H. Wolff

This species is similar to, and sometimes treated as conspecific with, Pleurospermum davidii (here a synonym of P. benthamii). It is here distinguished by the more finely divided leaves (ultimate segments to 5 mm wide), hirtellous along the margin, the smaller fruits (less than 6 mm), and the terminal umbel overtopped by the staminate lateral umbels. It has reputed medicinal value (in Sichuan).

Plants 40–70 cm. Root conic, branched. Stem hollow, ribbed, base 5–12 mm thick. Basal and lower leaves long-petiolate, sheaths narrow-oblong; blades ovate, 7–18 × 5–15 cm, 3-ternate-pinnate; pinnae 5–7 pairs, proximal pinnae petiolulate; ultimate segments oblong-lanceolate, 10–25 × 2–5 mm, hirtellous along nerves and margins otherwise glabrous, irregularly incised. Leaves gradually reduced upwards. Terminal umbels fertile, 8–17 cm across, peduncle 2–4 cm, overtopped by the sterile lateral umbels (when present), peduncles to 14 cm; bracts 8–12, oblong-ovate to spatulate, 1.5–3 cm, broadly white-margined to the first lobes, apex 3–5-lobed; rays 12–28, 3.5–7 cm, unequal, smooth; bracteoles 8–10, oblong-elliptic to spatulate, 10–15 mm, apex entire or shortly 3-lobed; pedicels numerous, 6–10 mm. Calyx teeth obsolete. Petals obovate, white, ca. 1 mm. Anthers dark purple. Stylopodium short-conic. Fruit oblong-ovoid, 4–6 × ca. 3 mm; dorsal ribs sinuolate-winged, lateral ribs plane-winged; vittae 1 in each furrow, 2 on commissure. Fl. Jul–Aug, fr. Sep.

Gansu, Hubei, Ningxia, Qinghai, Shaanxi, Sichuan.

Alpine grasslands, river banks; 2500–4300 m.

Pleurospermum franchetianum là một loài thực vật có hoa trong họ Hoa tán. Loài này được Hemsl. miêu tả khoa học đầu tiên năm 1892.

松潘棱子芹（学名：Pleurospermum franchetianum）为伞形科棱子芹属的植物，为中国的特有植物。分布于中国大陆的宁夏、四川、陕西、青海、甘肃、湖北等地，生长于海拔2,500米至4,300米的地区，多生于高山坡和山梁草地上，目前尚未由人工引种栽培。