catclaw buttercup

Ranunculus ternatus is a perennial herb that may have filiform, tuberiferous stolons. The roots are both tuberous and fibrous, with the tubers being obconic or ovoid in shape and often clustered. The stems are 5 to 25 cm tall, glabrous or sparsely puberulent, and may be branched. Basal leaves number between 5 and 10, with petioles ranging from 2 to 10 cm in length. The leaves are either simple or ternate, with blades that are subreniform or subpentagonal in shape. The simple leaves are 3-lobulate or 3-parted, with the central lobe entire or 1- to 2-lobed, and the lateral lobes 1- to 3-lobed. The ternate leaves are larger, with petiolulate leaflets that are 1- to 4-lobed or 1- to 2-parted. The stem leaves are 1 to 3 in number, ternate, and sessile, with lobes that are obliquely narrowly ovate or sublinear. The flowers are solitary, terminal, and 1 to 1.5 cm in diameter. The receptacle is glabrous, and the sepals are 5 in number, yellowish-green, elliptic to broadly elliptic, and 3 to 4 mm long. The petals are 5, yellow, narrowly obovate to obovate, and 5 to 7 mm long. The stamens are numerous and arranged in a dense cluster.

Ranunculus ternatus is found in a variety of habitats across its native range, including moist meadows, forest edges, and rocky slopes. It thrives in temperate climates and is adapted to both full sun and partial shade. The species is often found in areas with well-drained soils and moderate moisture levels.

Ranunculus ternatus is relatively easy to cultivate in a garden setting. It prefers well-drained, moist soils and can tolerate a range of light conditions, from full sun to partial shade. The plant benefits from regular watering and occasional fertilization. Due to its perennial nature and tuberous roots, it can be propagated through division or by planting tubers. It is important to avoid overwatering, as the plant is susceptible to root rot in poorly drained soils. In colder climates, the plant may require mulching to protect the tubers during winter.

Ranunculus ternatus is primarily of interest to botanists and horticulturists due to its ornamental value and ecological significance. The plant is not commonly used for medicinal purposes, but its presence in natural habitats contributes to biodiversity. In garden settings, it can be used as a ground cover or in rock gardens to add a touch of yellow color during the early spring. The species is also valuable for ecological studies due to its polymorphic nature and wide distribution.