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2. Callianthemum angustifolium Witasek, Verh. K.K. Zool.-Bot. Ges. Wien. 49: 336. 1899.
薄叶美花草 bao ye mei hua cao
Stems 17--30 cm tall, unbranched. Basal leaves 2--4, fully expanded at anthesis; petiole 8.5--22 cm; leaf blade narrowly ovate to oblong, 6--13 × 2.5--4 cm, leathery, with 3 or 4 pairs of lateral leaflets, shortly petiolate; leaflets 2 × pinnately divided; segments lanceolate-linear. Stem leaves 2 or 3; lower ones shortly petiolate, 2.5--5 cm, margin with 1 or 2 pairs of lobes; upper ones subsessile, 1.2--1.5 cm, plumate. Flowers 2.6--3 cm in diam. Sepals elliptic, ca. 8 × 4.5--6.5 mm. Petals ca. 11, white, obovate-oblong, 1.4--1.6 × 0.5--0.8 cm, apex rounded to retuse. Stamens ca. 1/2 as long as petal; anthers narrowly oblong. Achenes ovoid, ca. 2 mm, rugose. Fl. Jun.
Pine forests; ca. 2200 m. N Xinjiang [Mongolia, Russia].
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