Compilation
Ranunculus filiformis

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Name

Identification
Ranunculus reptans L. [family RANUNCULACEAE ] (stored under name); Verified by Not on sheet, Ranunculus filiformis Michx. [family RANUNCULACEAE ] Verified by Smith, Sir James Edward / Boott, F.,
Related name
  • Ranunculus flammula
  • Ranunculus reptans
  • Ranunculus filiformis

Flora

Entry for Ranunculus flammula Linnaeus var. ovalis (J. M. Bigelow) L. D. Benson [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 flammula Linnaeus var. ovalis (J. M. Bigelow) L. D. Benson [family RANUNCULACEAE], Bull. Torrey Bot. Club, 69: 305. 1942
Ranunculus filiformis Michaux var. ovalis J. M. Bigelow [family RANUNCULACEAE], Fl. Boston. ed., 2, 224. 1824
Ranunculus flammula var. samolifolius (Greene) L. D. Benson [family RANUNCULACEAE]
Ranunculus reptans Linnaeus var. ovalis (J. M. Bigelow) Torrey & A. Gray [family RANUNCULACEAE]
Information
Stems prostrate or sometimes ascending, 0.5-2 mm thick. Leaf blades lance-elliptic to lanceolate or linear, 0.8-3.3 × 0.2-0.8 cm. Flowers: sepals 2-3 mm; petals 3-5 × 2-3 mm. 2n = 32.
Phenology
Flowering spring-summer (May-Sep)
Altitude range
0-2900 m
Distribution
USA AlaskaUSA Ariz.USA Calif.USA Colo.USA Conn.USA IdahoUSA MaineUSA Mass.USA Mich.USA Minn.USA Mont.USA Nev.USA N.H.USA N.Mex.USA N.Y.USA N.Dak.USA Oreg.USA Pa.USA UtahUSA Vt.USA Wash.USA Wyo.Canada Alta.Canada B.C.Canada Man.Canada N.B.Canada Nfld.Canada N.W.T.Canada N.S.Canada Ont.Canada P.E.I.Canada Que.Canada Sask.
Discussion
Ranunculus flammula var. ovalis, as currently understood, is heterogeneous. Many specimens from throughout the cited range scarcely differ from specimens of R. flammula var. reptans and perhaps should be included in the latter variety. Material from the Pacific slope, however, may be intermediate between R. flammula var. reptans and R. flammula var. flammula or may show various combinations of the distinguishing characteristics of the two. Biosystematic study of R. flammula as a whole will be needed for a meaningful treatment of these populations to be possible.

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