Ranunculus uncinatus

D. Don

in G. Don, Gen. Hist. 1: 35. 1831.

Synonyms: Ranunculus bongardii Greene Ranunculus bongardii var. tenellus (A. Gray) Greene Ranunculus uncinatus var. earlei (Greene) L. D. Benson Ranunculus uncinatus var. parviflorus (Torrey) L. D. Benson
Treatment appears in FNA Volume 3.
Revision as of 22:49, 5 November 2020 by imported>Volume Importer
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Stems erect, never rooting nodally, hispid or glabrous, base not bulbous. Roots never tuberous. Basal leaf blades cordate to reniform in outline, 3-parted or sometimes 3-foliolate, 1.8-5.6 × 2.8-8.3 cm, segments again lobed, ultimate segments elliptic to lanceolate, margins toothed or crenate-toothed, apex acute to rounded-obtuse. Flowers: receptacle glabrous; sepals reflexed or sometimes spreading, 2-3.5 × 1-2 mm, pubescent; petals 5, yellow, 2-4(-6) × 1-2(-3) mm. Heads of achenes globose or hemispheric, 4-7 × 4-7 mm; achenes 2-2.8 × 1.6-2 mm, glabrous or sparsely hispid, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, lanceolate, curved, hooked, 1.2-2.5 mm. 2n = 28.

Phenology: Flowering spring–summer (Apr–Aug).
Habitat: Moist meadows or woods, often along streams
Elevation: 0-3400 m


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Alta., B.C., Alaska, Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Wash., Wyo.


Plants with hispid stems and achenes are often separated as Ranunculus uncinatus var. parviflorus; these two characters are poorly correlated, however, and sometimes vary between plants in a single collection. Ranunculus uncinatus was reported from northeastern Alberta and adjacent Northwest Territories by H. J. Scoggan (1978-1979, part 3). The specimens have hairy receptacles and straight, broad achene beaks; they apparently represent small individuals of R. macounii.

Some Native Americans used Ranunculus uncinatus as an antrirheumatic, a diaphoretic, a disinfectant, and an orthopedic aid, as well as in herbal steam baths intended to soothe sore muscles and rheumatism (D. E. Moerman 1986).

Selected References


Lower Taxa

... more about "Ranunculus uncinatus"
Alan T. Whittemore +
D. Don +
Alta. +, B.C. +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Wash. +  and Wyo. +
0-3400 m +
Moist meadows or woods, often along streams +
Flowering spring–summer (Apr–Aug). +
in G. Don, Gen. Hist. +
Ranunculus bongardii +, Ranunculus bongardii var. tenellus +, Ranunculus uncinatus var. earlei +  and Ranunculus uncinatus var. parviflorus +
Ranunculus uncinatus +
Ranunculus sect. Ranunculus +
species +