兰州岩风 lan zhou yan feng

Seseli lanzhouense (K. T. Fu ex R. H. Shan & M. L. Sheh) V. M. Vinogradova.

Plants 30–90 cm, herbaceous, densely pubescent throughout. Caudex simple. Stems several, suberect, branched from base, branches slender, spreading. Basal leaves numerous; blade oblong, 9–25 × 2–8 cm, 2–3-pinnately dissected; pinnae 4–7 pairs, pinnules 3 pairs; ultimate segments gray-green, linear or rhombic, 4–12 × 1.5–2 mm. Synflorescence paniculate; umbels 2–3 cm across; peduncles slender; bracts absent or occasionally 1 (like uppermost leaf); rays 2–4, 4–15 mm, slightly unequal; bracteoles 5–7, linear-lanceolate, 1.5–2 × ca. 1 mm; umbellules 5–10-flowered. Calyx teeth subulate, 0.6–1 mm. Petals white, abaxially puberulous. Stylopodium conic, base margin dilated, undulate. Fruit ellipsoid, flattened laterally, 2.8–3.2 × 1.4–1.5 mm, densely villous; ribs equal, filiform, slightly prominent; vittae 1(–2) in each furrow, 2 on commissure. Fl. and fr. Jul–Oct.

Mountain slopes. Gansu (Lanzhou), Qinghai.

Two of us (Pimenov & Kljuykov, FOC 14: 130. 2005) treat this as Seseli lanzhouense.