Flora of North America species comparison

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Ranunculus trilobus

threelobe buttercup
Stems

erect or reclining, hispid or sometimes glabrous.
Flowers

pedicellate;

receptacle hispid;

sepals 5, reflexed, 3-4 × 2 mm, sparsely hispid;

petals 5, 4-5 × 2-3 mm.
Heads of achenes

ovoid, 8-9 × 6-7 mm;

achenes 30-60 per head, 2 × 2 mm, faces densely tuberculate, glabrous, margin smooth;

beak semicircular, hooked, 0.3 mm.
Basal

and lower cauline leaf blades cordate-ovate, 3-foliolate, 5-8 × 3-6(-7) cm, leaflets again cleft or parted, leaflet base obtuse to acute, margins dentate, apex rounded to acute.

Ranunculus trilobus
Phenology Flowering spring (Apr).
Habitat Fields and roadsides
Elevation 0-100 m (0-300 ft)
Distribution
from FNA
AL; FL; LA; SC; TX; native to Europe [Introduced in North America]
[BONAP county map]
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. marginatus, 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. triternatus, R. turneri, R. uncinatus
Name authority Desfontaines: Fl. Atlant. 1: 437. (1799)
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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