长茎囊瓣芹 chang jing nang ban qin

Plants 20–65 cm. Stems usually single, or occasionally 2, 1–5-branched or unbranched. Basal leaves absent. Cauline leaves long-petiolate, petioles 1.5–9 cm; blade triangular-ovate, 5–7 × 3–5 cm, ternate-2-pinnate; ultimate segments ovate or ovate-lanceolate, 5–15 × 2–10 mm, setulose on the veins. Upper leaves smaller, 2-ternate; ultimate segments ovate-lanceolate. Umbels 3–4 cm across in flower, 5(–7) cm in fruit; bracts absent; rays (4–)10–20, (1–)3–4 cm; bracteoles 2–3, 0.5–1.5 mm; umbellules (2–)3-flowered; pedicels 2–3(–5) mm. Calyx teeth subulate, ca. 0.5 mm. Petals white. Stylopodium low-conic; styles ca. 0.5 mm, shorter than stylopodium, suberect to slightly reflexed. Fruit ovoid, 2–3 × 1.5–2 mm; ribs filiform; vittae 1–3 in each furrow, 4 on commissure. Fl. Apr–Jun, fr. Jul–Sep.

Forests, alpine meadows, moist mossy rocks; 1900–3700 m. S Gansu, Guizhou, C and S Shaanxi, W Sichuan, SE Xizang.

Lower Taxa

• Pternopetalum longicaule var. humile R. H. Shan & F. T. Pu
• Pternopetalum longicaule var. longicaule