Difference between revisions of "Ranunculus marginatus"
Mém. Soc. Linn. Paris 1: 318. 1822.
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|publication year=1822 | |publication year=1822 | ||
|special status=Introduced | |special status=Introduced | ||
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|genus=Ranunculus | |genus=Ranunculus | ||
|subgenus=Ranunculus subg. Ranunculus | |subgenus=Ranunculus subg. Ranunculus | ||
Latest revision as of 22:49, 5 November 2020
Stems erect, sparsely pilose. Basal leaf blades reniform to semicircular, undivided or shallowly 3-lobed, 2.5-5 × 3-7 cm, base truncate to nearly cordate, margins crenate or dentate, apex rounded or obtuse. Flowers pedicellate; receptacle hispid; sepals 5, reflexed 1 mm from base, 3-5 × 1-2 mm, hispid; petals 5, 4-5 × 2-3.5 mm. Heads of achenes hemispheric to globose, 4 × 6 mm; achenes 15-20 per head, 2.5-3 × 2-2.5 mm, faces covered with high sharp tubercles or low spines, glabrous, margin smooth; beak deltate, straight, 0.8-1 mm.
Phenology: Flowering spring (Mar–May).
Habitat: Roadsides
Elevation: 0-100 m
Distribution
Introduced; Ala., La., Tex., native to Europe.
Discussion
A form of Ranunculus marginatus, with the fruits weakly tuberculate or almost smooth, similar to the smooth-fruited forms of R. sardous, is found in Europe; it is not known from North America.
Selected References
None.