Ranunculus glaberrimus |
Ranunculus andersonii |
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sagebrush buttercup, smooth buttercup |
Anderson's buttercup, pink buttercup |
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Roots | cylindric, 1-3 mm thick. |
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Stems | prostrate or ascending, 4-15 cm, glabrous, each with 1-4 flowers. |
erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
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Basal leaves | persistent, blades reniform or obovate to very narrowly elliptic, 0.7-5.2 × 1-2 cm, base truncate, obtuse or attenuate, margins entire or with 3 broad, apical crenae, apex rounded to acute. |
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Basal leaf 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. |
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Flowers | pedicels glabrous or nearly so; receptacle glabrous; sepals 5-8 × 3-7 mm, abaxially glabrous or sparsely pilose, hairs colorless; petals 5-10, 8-13 × 5-12 mm; nectary scale glabrous or ciliate. |
receptacle hispid; sepals spreading, 9-15 × 5-9 mm, glabrous; petals pinkish white, 12-18 × 9-13 mm. |
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Heads of achenes | globose, 7-12(-20) × 6-11(-20) mm; achenes 1.4-2.2 × 1.1-1.8 mm, usually finely pubescent; beak subulate or lance-subulate, straight or curved, 0.4-1 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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Ranunculus glaberrimus |
Ranunculus andersonii |
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Phenology | Flowering spring (Apr–May). | |||||
Habitat | Slopes in sagebrush or pinyon-juniper woodland | |||||
Elevation | 900-2300 m (3000-7500 ft) | |||||
Distribution |
AZ; CA; CO; ID; MT; ND; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; SK
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AZ; CA; ID; NV; OR; UT
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Discussion | Varieties 2 (2 in the flora). Usually only a minority of the ovaries develop, and the fruiting receptacle is completely hidden by aborted ovaries. Populations growing at high elevations (Ranunculus glaberrimus var. ellipticus) and low elevations (var. glaberrimus) are usually well differentiated, but these varieties intergrade at intermediate elevations. The Thompson Indians rubbed the flowers or the whole plant of Ranunculus glaberrimus on arrow points as a poison (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. Epirotes | Ranunculaceae > Ranunculus > subg. Crymodes | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Beckwithia andersonii, R. andersonii var. juniperinus, R. andersonii var. tenellus, R. juniperinus | |||||
Name authority | Hooker: Fl. Bor.-Amer. 1: 12. (1829) | A. Gray: Proc. Amer. Acad. Arts 7: 327. (1867) | ||||
Web links |
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