Ranunculus cooleyae |
Ranunculus bulbosus |
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Cooley's buttercup |
bulbous buttercup, bulbous crowfoot, renoncule bulbeuse, St. Anthony's-turnip |
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Roots | never tuberous. |
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Stems | erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
erect, never rooting nodally, strigose or hirsute, base bulbous and cormlike. |
Basal leaf | blades circular to reniform in outline, 3-5-parted, 0.8-3.8 × 1.7-6.9 cm, segments again lobed, ultimate segments elliptic or oblong, margins crenate, apex rounded; cauline leaf 0-1, scalelike. |
blades ovate to cordate in outline, 3-foliolate, rarely merely deeply divided, 2–5.3 × 2.4–5.4 cm, leaflets 1–2x-lobed, ultimate segments oblong to obovate, margins toothed, apex rounded in outline. |
Flowers | receptacle glabrous; sepals spreading, yellow, 7-11 × 4-7 mm, glabrous; petals 11-15, yellow, 8-12 × 3-5 mm. |
receptacle pubescent; sepals reflexed 2–3 mm above base, 6–9 × 2–4 mm, pilose; petals 5, yellow, 9–13 × 8–11 mm. |
Heads of achenes | hemispheric or spheric, 7-8 × 9-10 mm; achenes 2.4-4.6 × 1.2-2.2 mm, glabrous; beak persistent, filiform, hooked distally, 1-1.8 mm. |
ovoid, 6–9 × 5–7 mm; achenes 2.2–3.2 × 2.2–2.8 mm, glabrous, margin forming narrow rib 0.1–0.2 mm wide; beak persistent, lanceolate to deltate, 0.2–0.8 mm, slender tip hooked when present. |
Tuberous | roots absent. |
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2n | = 16. |
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Ranunculus cooleyae |
Ranunculus bulbosus |
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Phenology | Flowering late spring–summer (Jun–Aug). | Flowering spring (Apr–Jun). |
Habitat | Slopes near persistent snowbanks | Meadows |
Elevation | 500-1800 m (1600-5900 ft) | 0–700 m (0–2300 ft) |
Distribution |
AK; WA; BC
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AL; AR; CA; CT; DC; DE; GA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MO; NC; NE; NH; NJ; NY; OH; OR; PA; RI; SC; TN; VA; VT; WA; WV; BC; NF; NS; ON; QC; South America; native to Eurasia; Pacific Islands; Australia [Introduced in North America]
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Discussion | Ranunculus bulbosus is native to Europe and the Near East but has become naturalized in many other parts of the world. It is considered an introduced weed in the flora. The Iroquois used Ranunculus bulbosus as a toothache remede and as a a treatment for venereal disease (D. E. Moerman 1986). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Cyrtorhyncha > sect. Arcteranthis | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus |
Sibling taxa | ||
Synonyms | Arcteranthis cooleyae, Kumlienia cooleyae | R. bulbosus var. dissectus, R. bulbosus var. valdepubens |
Name authority | Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) | Linnaeus: Sp. Pl. 1: 554. (1753) |
Web links |
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