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Ranunculus oresterus
L.D. Benson
Family:
Ranunculaceae
Blue Mountain Buttercup
FNA
Resources
Alan T. Whittemore in Flora of North America (vol. 3)
Stems erect or ascending, not rooting nodally, glabrous. Roots not thickened basally, canescent. Proximal cauline leaf blades narrowly elliptic to linear, 2.5-4.8 × 0.2-0.9 cm, base narrowly acuminate, margins entire, apex acute to acuminate. Inflorescences: bracts lanceolate to linear. Flowers: receptacle glabrous; sepals 5, spreading or reflexed from base, 3-5 × 1-2 mm, glabrous; petals 5, 4-6 × 1-2 mm; nectary scales glabrous. Heads of achenes hemispheric, 2-4 × 3-5 mm; achenes 1-1.4 × 0.8 mm, glabrous; beak subulate, straight, 0.2-0.4 mm.
Flowering spring (May). In moist meadows; 1200-1700 m; Idaho, Oreg.
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].
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