Herbs perennial. Roots fibrous, subequally thick. Stems filiform, stoloniferous, to 25 cm, glabrous or sparsely appressed puberulent, rooting at nodes. Basal leaves ca. 6, subsessile; blade narrowly linear, linear-oblanceolate, or narrowly spatulate, 3.5--5.5 × 0.1--0.2 cm, glabrous or sparsely puberulent, base slightly dilated, margin entire, apex obtuse. Stem leaves several at each node, similar to basal ones but smaller. Flowers solitary, terminal or axillary, 0.6--0.9 cm in diam. Pedicel 3--8 cm, puberulent. Receptacle glabrous. Sepals 5, ovate-orbicular, 2--3 mm, abaxially puberulent. Petals 5--7, obovate or narrowly obovate, 3--4.5 × 2--2.5 mm, nectary pit without a scale, apex rounded or truncate. Stamens numerous; anthers ovate-orbicular. Aggregate fruit globose, 2.5--5 mm in diam.; carpels numerous. Achene obliquely obovoid, 1--1.5 × 0.8--1 mm, glabrous; style persistent, ca. 0.2 mm. Fl. Jul--Sep.
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