Ranunculus fascicularis |
Ranunculus andersonii |
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early buttercup, early crowfoot, prairie buttercup, tuft buttercup |
Anderson's buttercup, pink buttercup |
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Roots | always both filiform and tuberous on same stem. |
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Stems | erect or ascending, never rooting nodally, strigose or spreading-strigose, base not bulbous. |
erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
Basal leaf | blades ovate to broadly ovate in outline, 3-5-foliolate, 2.1-4.7 × 1.9-4.5 cm, leaflets undivided or 1x-lobed or -parted, ultimate segments oblanceolate or obovate, margins entire or with few teeth, apex rounded-acute to rounded-obtuse. |
blades cordate in outline, ternately 1-2x-compound, 1.5-3.8 × 2.1-3.8 cm, leaflets 2-3x-parted, ultimate segments elliptic to linear, margins entire or with occasional teeth, apex obtuse to acuminate. |
Flowers | receptacle hispid or glabrous; sepals spreading or sometimes reflexed from base, 5-7 × 2-3 mm, hispid or glabrous; petals 5(-7), yellow, 8-14 × 3-6 mm. |
receptacle hispid; sepals spreading, 9-15 × 5-9 mm, glabrous; petals pinkish white, 12-18 × 9-13 mm. |
Heads of achenes | globose or ovoid, 5-9 × 5-8 mm; achenes 2-2.8 × 1.8-2.2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, filiform, straight, 1.2-2.8 mm. |
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Tuberous | roots absent. |
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Fruiting | heads globose or depressed-globose, 13-27 × 21-29 mm; fruit wall veined, inflated, not winged, fruits thus utricles; utricles 6-12 × 4-6 mm, glabrous; beak persistent, deltate or subulate from deltate base, 0.2-0.6 mm. |
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2n | = 32. |
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Ranunculus fascicularis |
Ranunculus andersonii |
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Phenology | Flowering winter–spring (Jan–Jun). | Flowering spring (Apr–May). |
Habitat | Grassland or deciduous forest | Slopes in sagebrush or pinyon-juniper woodland |
Elevation | 0-300 m (0-1000 ft) | 900-2300 m (3000-7500 ft) |
Distribution |
AL; AR; CT; GA; IA; IL; IN; KS; KY; LA; MA; MD; MI; MN; MO; MS; NC; NE; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; MB; ON
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AZ; CA; ID; NV; OR; UT
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Discussion | Ranunculus fascicularis is very similar to R. hispidus var. hispidus, and herbarium specimens without underground parts may be difficult to identify. Ranunculus fascicularis grows in drier habitats; segments of its leaves are commonly oblanceolate and blunt, with few or no marginal teeth; and its petals are widest at or below the middle. Ranunculus hispidus var. hispidus is usually larger in all its parts (leaves, flowers, heads of achenes); leaf segments are variable in shape but their apices are normally sharper and their marginal teeth more numerous, and petals are widest above the middle. (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. Ranunculus > sect. Ranunculus | Ranunculaceae > Ranunculus > subg. Crymodes |
Sibling taxa | ||
Synonyms | R. fascicularis var. apricus | Beckwithia andersonii, R. andersonii var. juniperinus, R. andersonii var. tenellus, R. juniperinus |
Name authority | Muhlenberg ex J. M. Bigelow: Fl. Boston., 137. (1814) | A. Gray: Proc. Amer. Acad. Arts 7: 327. (1867) |
Web links |