Ranunculus arvensis

Stems erect or ascending, sparsely pilose. Basal and lower cauline leaf blades obovate to rhombic in outline, 3-parted or 3(-5)-foliolate, 1.8-5.2 × 1.6-4.2 cm, leaflets oblanceolate or divided into oblanceolate or linear segments, leaflet base narrowly acuminate, margins entire or distally dentate, apex rounded or acuminate. Flowers pedicellate; receptacle sparsely hispid; sepals 5, spreading, 4-7 × 1-2 mm, strigose; petals 5, 5-8 × 2-4 mm. Heads of achenes discoid, 8-9 mm across; achenes 5-8 per head, 4-6.4 × 2.8-4.4 mm, faces and margin covered with long spines, glabrous; beak lance-subulate, straight, 1.6-3.8 mm.

Phenology: Flowering spring (Mar–Jun).
Habitat: Grasslands, ephemeral pools, disturbed areas
Elevation: 0-1200 m

Distribution

• Generated Map
• Legacy Map

Ark., Calif., D.C., Ga., Idaho, Ill., Kans., La., Miss., Mo., N.J., N.Y., N.C., Oreg., Pa., S.C., Tenn., Utah, Wash., South America, native to Eurasia, Pacific Islands, Australia.

Discussion

Selected References

None.

Lower Taxa

None.