Compilation
Ranunculus rhomboideus

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Name

Identification
Ranunculus affinis R.Br. [family RANUNCULACEAE ] (stored under name); Ranunculus rhomboideus Goldie [family RANUNCULACEAE ] Verified by Simmons,H.G.,
Related name
  • Ranunculus rhomboideus
  • Ranunculus affinis
  • Ranunculus sp.

Flora

Entry for Ranunculus rhomboideus Goldie [family RANUNCULACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 3,
Names
Ranunculus rhomboideus Goldie [family RANUNCULACEAE], Edinburgh J. Sci., 6: 329. 1822
Information
Stems erect, 5-22 cm, pilose or occasionally glabrous, each with 3-12 flowers. Roots slender, 0.8-1.8 mm thick. Basal leaves persistent, blades ovate to rhombic, undivided or rarely innermost 3-parted, 1.1-5.3 × 0.9-3.6 cm, base obtuse, margins crenate with 5 crenae, apex rounded. Flowers: pedicels pilose; receptacle pilose; sepals 4-6 × 1.5-3 mm, abaxially pilose, hairs colorless; petals 5, 6-8 × 2-4 mm; nectary scale glabrous. Heads of achenes depressed-globose, 4-6 × 5-7 mm; achenes 1.8-2.2 × 1.2-1.8 mm, glabrous; beak slender, curved, 0.2-0.3 mm. 2n = 16.
Phenology
Flowering spring (Apr-Jun)
Altitude range
0-900 m
Distribution
USA Ill.USA IowaUSA Mich.USA Minn.USA Mont.USA Nebr.USA N.Dak.USA S.Dak.USA Wis.Canada Alta.Canada B.C.Canada Man.Canada N.W.T.Canada Ont.Canada Sask.
Discussion
In addition to the range given above, L. D. Benson (1948) cited nineteenth-century specimens from Quebec, New York, Massachusetts, and Rhode Island. No modern specimens have been seen from those areas.

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