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FOC | Family List | FOC Vol. 9 | Rosaceae | Potentilla

54. Potentilla nervosa Juzepczuk in Komarov, Fl. URSS. 10: 610. 1941.

显脉委陵菜 xian mai wei ling cai

Herbs perennial. Roots robust, terete. Flowering stems erect or slightly curved at base, 16–30 cm tall, together with petioles grayish white tomentose and pilose. Radical leaves 3–10 cm including petiole; stipules brown, membranous, abaxially appressed villous; leaf blade 3-foliolate; leaflets sessile or terminal one shortly petiolulate, oblong-elliptic or obovate-elliptic, 1–3.5 × 0.7–1.5 cm, abaxially canescent tomentose, appressed white villous on veins, adaxially appressed pilose, sometimes sparsely canescent tomentose, base cuneate or broadly so, margin acutely or obtusely 6–10-serrate, apex acute or obtuse; cauline leaves 1–3; stipules ovate-lanceolate, herbaceous, abaxially densely white tomentose and villous, margin entire, apex rarely 2- or 3-fid; leaflets resembling those of radical leaves. Inflorescence terminal, laxly cymose-corymbose, many flowered. Flowers 1.5–1.8 cm in diam.; pedicel 1.5–2.5 cm, densely tomentose. Sepals triangular-ovate, apex acuminate; epicalyx segments fasciated or lanceolate, nearly equaling sepals, abaxially appressed pilose, apex subobtuse or acuminate. Petals yellow, obovate, 0.5–1 × as long as sepals, apex emarginate. Style subterminal, base inconspicuously thickened; stigma dilated. Achenes not seen. Fl. and fr. Jun–Jul.

Forest margins, grassy slopes; 1900--2500 m. Xinjiang [Russia].


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