Ranunculus triternatus |
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Dalles Mountain buttercup, obscure buttercup |
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Roots | cylindric, 2-3 mm thick. |
Stems | prostrate or ascending, 5-20 cm, glabrous, each with 1-6 flowers. |
Basal leaves | persistent, blades rhombic to deltate or reniform in outline, 3-4x-dissected, 1.1-3.4 × 2-3.1 cm, segments linear, base obtuse, margins crenate, apices of segments narrowly rounded. |
Flowers | pedicels glabrous; receptacle short-pubescent; sepals 4-8 × 2-5 mm, abaxially glabrous or nearly so; petals 5, 6-15 × 4-10 mm; nectary scale glabrous. |
Heads of achenes | depressed-globose, 4-6 × 5-8 mm; achenes 1.8-2.2 × 1.2-1.8 mm, finely pubescent; beak subulate, straight, 0.8-1.5 mm. |
Ranunculus triternatus |
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Phenology | Flowering spring (Apr–May). |
Habitat | Grassland or sagebrush |
Elevation | 900-1700 m (3000-5600 ft) |
Distribution |
ID; NV; OR; WA
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Discussion | Of conservation concern. C. L. Hitchcock et al. (1955-1969, vol. 2) considered the name Ranunculus triternatus A. Gray to be an illegitemate homonym and used the illegitimate (superfluous) name R. reconditus A. Nelson & J. F. Macbride for this species. The name Ranunculus triternatus Poiret was not validly published (not accepted by Poiret) and does not invalidate R. triternatus A. Gray. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes |
Sibling taxa | |
Synonyms | R. glaberrimus var. reconditus |
Name authority | A. Gray: Proc. Amer. Acad. Arts 21: 370. (1886) |
Web links |