Flora of North America species comparison

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Ranunculus marginatus

margined buttercup
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.

Ranunculus marginatus
Phenology Flowering spring (Mar–May).
Habitat Roadsides
Elevation 0-100 m (0-300 ft)
Distribution
from FNA
AL; LA; TX; native to Europe [Introduced in North America]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3.
Parent taxa Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Echinella
Sibling taxa
R. abortivus, R. acriformis, R. acris, R. adoneus, R. alismifolius, R. allegheniensis, R. allenii, R. ambigens, R. andersonii, R. aquatilis, R. arizonicus, R. arvensis, R. auricomus, R. austro-oreganus, R. bonariensis, R. bulbosus, R. californicus, R. canus, R. cardiophyllus, R. cooleyae, R. cymbalaria, R. eschscholtzii, R. fascicularis, R. fasciculatus, R. ficaria, R. flabellaris, R. flammula, R. gelidus, R. glaberrimus, R. glacialis, R. gmelinii, R. gormanii, R. harveyi, R. hebecarpus, R. hederaceus, R. hispidus, R. hydrocharoides, R. hyperboreus, R. hystriculus, R. inamoenus, R. jovis, R. kamtschaticus, R. lapponicus, R. laxicaulis, R. lobbii, R. macauleyi, R. macounii, R. macranthus, R. micranthus, R. muricatus, R. nivalis, R. occidentalis, R. oresterus, R. orthorhynchus, R. pacificus, R. pallasii, R. parviflorus, R. pedatifidus, R. pensylvanicus, R. platensis, R. populago, R. pusillus, R. pygmaeus, R. ranunculinus, R. recurvatus, R. repens, R. rhomboideus, R. sabinei, R. sardous, R. sceleratus, R. sulphureus, R. testiculatus, R. trilobus, R. triternatus, R. turneri, R. uncinatus
Name authority d'Urville: Mém. Soc. Linn. Paris 1: 318. (1822)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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