Stem ca. 20 cm tall, subglabrous, apically branched. Basal leaves ca. 8; petiole 3--4 cm, shortly sheathed; leaf blade 4--5 cm; lateral leaflets 1--3, broadly rhombic to flabellate-obovate; central leaflet flabellate-obovate, ca. 7 × 8 mm, apically 3-lobed and lobes retuse. Stem leaves borne at base of branches, opposite, small, ternate. Inflorescences few flowered. Sepals narrowly ovate, ca. 4 mm, apex obtuse. Petal limbs orbicular, ca. 1 mm; claw as long as petal. Stamens 5 or 10; filaments flat, linear, ca. 2.5 mm; anthers subglobose. Pistils ca. 3 mm; styles very short. Follicles ca. 9 × 2.5 mm. Seeds ca. 10, ca. 0.75 mm in diam., dorsally slightly ridged. Fl. Apr--May, fr. May--Jun.
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