歧裂水毛茛 qi lie shui mao gen

Ranunculus divaricatus Schrank, Baier. Fl. 2: 104. 1789.

Herbs perennial, submersed. Stems ca. 40 cm, branched, glabrous. Petiole 8--12 mm, glabrous, base vaginate; leaf blade flabellate in outline, ca. 1.5 × 2.8 cm, glabrous, 3-sect, segments ca. 3 × sect; ultimate lobules filiform, ± collapsing out of water. Flower ca. 1.2 cm in diam. Pedicel 2.5--5 cm, glabrous. Receptacle conical in flower and fruit, puberulent. Sepals 5, elliptic, ca. 3.5 mm, glabrous. Petals 5, white with yellow base, obovate, ca. 5.5 × 3.5 mm, apex rounded. Stamens ca. 12; anthers oblong, ca. 0.8 mm. Aggregate fruit subglobose, ca. 5 mm in diam.; achenes obliquely narrowly obovoid, 1.2--1.8 × 1--1.2 mm, sparsely puberulent above or glabrous, with 5--7 transverse wrinkles. Persistent style ca. 0.1 mm. Fl. May--Jun.

Lakes. Xinjiang [Kazakhstan, Russia (Siberia); Europe].