Ranunculus arvensis |
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corn buttercup, devil-on-all-sides, field buttercup, hungerweed |
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Stems | erect or ascending, sparsely pilose. |
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. |
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. |
Ranunculus arvensis |
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Phenology | Flowering spring (Mar–Jun). |
Habitat | Grasslands, ephemeral pools, disturbed areas |
Elevation | 0-1200 m (0-3900 ft) |
Distribution |
AR; CA; DC; GA; ID; IL; KS; LA; MO; MS; NC; NJ; NY; OR; PA; SC; TN; UT; WA; South America; native to Eurasia; Pacific Islands; Australia [Introduced in North America]
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Source | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Echinella |
Sibling taxa | |
Synonyms | R. arvensis var. tuberculatus |
Name authority | Linnaeus: Sp. Pl. 1: 555. (1753) |
Web links |
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