匐枝毛茛 fu zhi mao gen

Ranunculus repens var. brevistylus Maximowicz; R. repens f. polypetalus S. H. Li & Y. H. Huang.

Herbs perennial. Stolons present. Stems ascending or suberect, 10--60 cm, subglabrous or sparsely puberulent, branched above. Basal leaves with petiole 7--20 cm; blade ternate, 3-partite, rarely 3-sect, central leaflet broadly rhombic, 2--4.2 × 1.8--3.8 cm, glabrous or adaxially appressed puberulent, base broadly cuneate, secondary lobes lobed or more deeply divided; lateral leaflets oblique, unequally 2- or 3-lobed or -partite. Stem leaves similar to basal ones, smaller and shortly petiolate upward. Monochasium terminal, 2- to several flowered; bracts 3-sect or undivided, lanceolate-linear. Flowers 1.5--2.2 cm in diam. Pedicel 1--8 cm, appressed puberulent. Receptacle puberulent. Sepals 5, elliptic-ovate, 5--7 mm, abaxially appressed pubescent or subglabrous. Petals 5 (7--22 in f. polypetalus), obovate, 7--10 × 5--7 mm, nectary pit covered by a scale, apex rounded or rounded-truncate. Stamens numerous; anthers oblong. Aggregate fruit ovoid, 5--7 mm in diam.; carpels numerous. Achene bilaterally compressed, obliquely obovate, 2.2--3 × 1.8--2.1 mm, glabrous, narrowly marginate; style persistent, 0.5--0.8 mm. Fl. Apr--Aug, fr. May--Aug.

Meadows, moist places, by streams; 300--3300 m. Heilongjiang, Jilin, Liaoning, Nei Mongol, Shanxi, Xinjiang, NW Yunnan [Japan, Kazakhstan, Kyrgyztan, Mongolia, Pakistan, Russia (Siberia); Europe, North America].