Ranunculus testiculatus

Crantz

Stirp. Austr. Fasc. 2: 97. 1763.

Selected by author to be illustratedWeedyIntroduced
Synonyms: Ceratocephalus orthoceras de Candolle Ceratocephalus testiculatus (Crantz) Roth
Treatment appears in FNA Volume 3.
Revision as of 19:55, 24 September 2019 by FNA>Volume Importer

Stems erect or ascending, not rooting nodally, villous, not bulbous-based. Tuberous roots absent. Basal leaf blades broadly spatulate in outline, 1-2×-dissected, 0.9-3.8 × 0.5-1.5 cm, segments linear, margins entire, apex obtuse to acuminate. Flowers: receptacle glabrous; sepals spreading, 3-6 × 1-2 mm, villous; petals yellow, 3-5 × 1-3 mm. Heads of achenes cylindric, 9-16(-27) × 8-10 mm; achenes 1.6-2 × 1.8-2 mm, tomentose; beak persistent, lanceolate, 3.5-4.5 mm.


Phenology: Flowering spring (Apr–May).
Habitat: Disturbed areas, especially in grassland
Elevation: 400-2500 m

Distribution

V3 762-distribution-map.gif

B.C., Sask., Ariz., Calif., Colo., Idaho, Iowa, Kans., Minn., Mo., Mont., Nebr., Nev., N.Mex., N.Dak., Ohio, Oreg., S.Dak., Utah, Wash., Wyo., native to Eurasia.

Discussion

In North America, Ranunculus testiculatus seems to be expanding its range rapidly in arid and semiarid areas. A second species of this subgenus, R. falcatus Linnaeus [Ceratocephala falcata (Linnaeus) Persoon], has been reported from North America, but all reports seem to be based on misidentified material of R. testiculatus.

Selected References

None.

Lower Taxa

None.
... more about "Ranunculus testiculatus"
Alan T. Whittemore +
Crantz +
Undefined subg. Ceratocephalus +
B.C. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Iowa +, Kans. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Ohio +, Oreg. +, S.Dak. +, Utah +, Wash. +, Wyo. +  and native to Eurasia. +
400-2500 m +
Disturbed areas, especially in grassland +
Flowering spring (Apr–May). +
Stirp. Austr. Fasc. +
Selected by author to be illustrated +, Weedy +  and Introduced +
Ceratocephalus orthoceras +  and Ceratocephalus testiculatus +
Ranunculus testiculatus +
Ranunculus subg. Ceratocephala +
species +