Ranunculus orthorhynchus |
Ranunculus cymbalaria |
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Bloomer's buttercup, straight-beak buttercup, swamp buttercup |
alkali buttercup, renoncule cymbalaire, seaside buttercup, seaside crowfoot, shore buttercup |
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Roots | sometimes fleshy and ± tuberous. |
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Stems | nearly erect or decumbent, never rooting nodally, hispid, strigose, or glabrous, base not bulbous. |
dimorphic, flowering stems erect or ascending, stolons prostrate, rooting nodally, glabrous or sparsely hirsute, not bulbous-based. |
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Basal leaves | blades narrowly ovate to oblong or semicircular in outline, simple to 3-5-lobed or -foliolate, 2.8-12.5 × 2.5-14 cm, leaflets or segments undivided or 1-2x-lobed or -parted, ultimate segments circular to linear, margins dentate, crenate, or entire, apex rounded to narrowly acute. |
simple and undivided, blades oblong to cordate or circular, 0.7-3.8 × 0.8-3.2 cm, base rounded to cordate, margins crenate or crenate-serrate, apex rounded. |
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Flowers | receptacle hispid; sepals reflexed 1-2 mm above base, 5-11 × 2-4 mm, hispid, hirsute, or glabrous; petals 5-6, abaxially yellow or red, adaxially yellow, 8-18 × 4-11 mm. |
receptacle hispid or glabrous; sepals spreading, 2.5-6 × 1.5-3 mm, glabrous; petals 5, yellow, 2-7 × 1-3 mm. |
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Heads of achenes | hemispheric to ovoid, 5-13 × 6-10 mm; achenes 2.8-4.5 × 1.8-3.2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, narrowly lanceolate to subulate, straight, 1.8-3.8(-4.8) mm. |
long-ovoid or cylindric, 6-12 × 4-5(-9) mm; achenes 1-1.4(-2.2) × 0.8-1.2 mm, glabrous; beak persistent, conic, straight, 0.1-0.2 mm. |
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Tuberous | roots absent. |
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2n | = 16. |
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Ranunculus orthorhynchus |
Ranunculus cymbalaria |
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Phenology | Flowering late spring–summer (May–Sep). | |||||||||
Distribution |
AK; CA; ID; MT; NV; OR; UT; WA; WY; BC
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Bogs; marshes; ditches; stream banks; often saline
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Discussion | Varieties 3 The first two varieties (Ranunculus orthorhynchus var. orthorhynchus and R. orthorhynchus var. platyphyllus) are rather weak, intergrading extensively in California and Oregon. By contrast, R. orthorhynchus var. bloomeri often grows with the others with little or no intergradation (although intermediate populations are found in some areas), and it has been treated as a distinct species, R. bloomeri, by many taxonomists. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Various Navaho groups used Ranunculus cymbalaria as a venereal aid, an emetic, and a ceremonial medicine. The Kawaiisu used it as a dermatological aid (D. E. Moerman 1986). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Cyrtorhyncha > sect. Halodes | ||||||||
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Subordinate taxa | ||||||||||
Synonyms | Halerpestes cymbalaria, R. cymbalaria var. alpinus, R. cymbalaria var. saximontanus | |||||||||
Name authority | Hooker: Fl. Bor.-Amer. 1: 21. (1829) | Pursh: Fl. Amer. Sept. 2: 392. (1814) | ||||||||
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