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

50. Potentilla betonicifolia Poiret in Lamarck, Encycl. 5: 601. 1804.

白萼委陵菜 bai e wei ling cai

Potentilla leucophylla Pallas; P. nivea Linnaeus var. angustifolia Ledebour.

Herbs perennial. Roots robust, terete, usually woody. Flowering stems erect or ascending, 8–16 cm tall, together with petioles white tomentose when young, later glabrescent. Radical leaves 5–12 cm including petiole; stipules brown, membranous, abaxially white sericeous-villous; leaf blade 3-foliolate; leaflets sessile, adaxially green, oblong-lanceolate or ovate-lanceolate, 1–5 × 0.5–1.5 cm, leathery, abaxially densely white tomentose, sparsely sericeous pilose along midvein, adaxially white tomentose initially, later glabrescent, base cuneate or subrounded, margin obtusely or acutely coarsely many dentate, apex acute; cauline leaves undeveloped, bractlike; stipules minute, oblong-ovate, leathery, abaxially white tomentose, margin entire. Inflorescences cymose-paniculate, laxly many flowered. Flowers ca. 1 cm in diam.; pedicel 1–1.5 cm, white tomentose. Sepals triangular-ovate, apex acute; epicalyx segments lanceolate or elliptic, shorter than or nearly equaling sepals, abaxially white tomentose and pilose, apex acute. Petals yellow, obovate, apex rounded. Style subterminal, base thickened; stigma slightly dilated. Achenes rugose. Fl. and fr. May–Jun.

Meadows on mountain slopes, rock crevices; 700--1600 m. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol [Mongolia, Russia].


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