Ranunculus rhomboideus |
Ranunculus jovis |
|
---|---|---|
Labrador buttercup, prairie buttercup, prairie crowfoot |
Utah buttercup |
|
Roots | slender, 0.8-1.8 mm thick. |
tuberous, 2.5-5 mm thick. |
Stems | erect, 5-22 cm, pilose or occasionally glabrous, each with 3-12 flowers. |
erect, 2.5-7.5 cm, glabrous, each with 1-4 flowers. |
Basal leaves | persistent, blades ovate to rhombic, undivided or rarely innermost 3-parted, 1.1-5.3 × 0.9-3.6 cm, base obtuse, margins crenate with 5 crenae, apex rounded. |
persistent, blades obdeltate in outline, 1-2.8 cm, segments 0.2-0.6 cm wide, deeply divided into 3 oblanceolate segments with lateral segments often again lobed or parted, base long-attenuate, margins entire, apex rounded. |
Flowers | pedicels pilose; receptacle pilose; sepals 4-6 × 1.5-3 mm, abaxially pilose, hairs colorless; petals 5, 6-8 × 2-4 mm; nectary scale glabrous. |
pedicels glabrous; receptacle glabrous or sparsely pilose; sepals 3-7 × 1.5-3 mm, abaxially glabrous; petals 5, 6-12 × 2-5 mm; nectary scale glabrous. |
Heads of achenes | depressed-globose, 4-6 × 5-7 mm; achenes 1.8-2.2 × 1.2-1.8 mm, glabrous; beak slender, curved, 0.2-0.3 mm. |
globose to cylindric, 3.5-8 × 3-7 mm; achenes 1.1-1.4 × 0.8-1.1 mm, finely pubescent; beak subulate, straight, 0.2-0.8 mm. |
2n | = 16. |
|
Ranunculus rhomboideus |
Ranunculus jovis |
|
Phenology | Flowering spring (Apr–Jun). | Flowering spring–summer (Apr–Jul). |
Habitat | Prairies, or occasionally open woods or thickets | Dry, open slopes, often around persistent snowbanks |
Elevation | 0-900 m (0-3000 ft) | 1700-3000 m (5600-9800 ft) |
Distribution |
IA; IL; MI; MN; MT; ND; NE; SD; WI; AB; BC; MB; NT; ON; SK
|
CO; ID; MT; NV; UT; WY
|
Discussion | In addition to the range given above, L. D. Benson (1948) cited nineteenth-century specimens from Quebec, New York, Massachusetts, and Rhode Island. No modern specimens have been seen from those areas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes |
Sibling taxa | ||
Name authority | Goldie: Edinburgh J. Sci. 6: 329. (1822) | A. Nelson: Bull. Torrey Bot. Club 27: 261. (1900) |
Web links |