Morphological characteristics of Ranunculus ternatus

Perennial submerged plants. The stem is more than 30 cm long, and the nodes are hairless or sparse. Leaves with short or long stems; Leaf blade is semicircular or fan-shaped, 2.5-4 cm in diameter, 3-5 times 2-3-lobed, lobules nearly filiform, usually gathered or nearly branched out of water, hairless or nearly hairless; The petiole is 0.7-2 cm long, with a wide or narrow sheath at the base, and the sheath is 3-4 mm long, usually with short hair, and occasionally the petiole has only a sheath-like part. The flower diameter is 1- 1.5(-2) cm; Pedicel 2-5 cm long, glabrous; Sepals reflexed, ovoid-elliptic, 2.5-4 mm long, with membranous margin and glabrous; Petals white, yellow at base, obovate, 5-9 mm long; Stamens 10 or more, anther length 0.6-1mm; The receptacle is hairy. Aggregate fruit is ovoid with a diameter of about 3.5 mm; 20-40 achenes, obliquely obovate, long1.2-2mm, with transverse wrinkles. The flowering period is from May to August.