Difference between revisions of "Ranunculus acriformis"
Proc. Amer. Acad. Arts 21: 374. 1886.
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Revision as of 22:47, 5 November 2020
Stems erect, not rooting nodally, hirsute or strigose, base not bulbous. Roots never tuberous, sometimes thick and ± fleshy proximally. Basal leaf blades broadly ovate to cordate or sometimes reniform in outline, deeply 3-divided or occasionally 3-foliolate, 2.2-6 × 2.5-7.7(-10) cm, divisions 1-2× deeply parted or -dissected, ultimate segments linear to broadly linear, margins entire (occasionally a lobe reduced to large tooth), apex acute or rounded-acute. Flowers: receptacle glabrous; sepals spreading or variously reflexed, 4-6 × 2-4 mm, appressed-hirsute; petals 5(-10), yellow, 7-13 × 4-10 mm. Heads of achenes hemispheric or globose, 5-8 × 6-8(-10) mm; achenes 2.2-3.4 × 2-3 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, lanceolate, strongly curved, 0.4-1.6 mm.
Distribution
Colo., Idaho, Mont., Utah, Wyo.
Discussion
Varieties 3
Selected References
None.
Lower Taxa
Key
| 1 | Sepals spreading, or reflexed from base, pubescence of appressed hairs; Wyoming, Colorado. | Ranunculus acriformis var. acriformis |
| 1 | Sepals reflexed 1–3 mm above base, pubescence of spreading hairs; Wyoming, Idaho, Montana, Utah. | > 2 |
| 2 | Beak of achene 1.2–1.6mm; receptacle hemispheric to spheric; Utah to Idaho and Montana. | Ranunculus acriformis var. montanensis |
| 2 | Beak of achene 0.4–1mm; receptacle obpyriform to cylindric; Utah. | Ranunculus acriformis var. aestivalis |