Flora of North America species comparison

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Ranunculus cooleyae

Ranunculus subg. Cyrtorhyncha

Cooley's buttercup
Stems

erect from short caudices, not rooting nodally, glabrous, not bulbous-based.

Basal leaf

blades circular to reniform in outline, 3-5-parted, 0.8-3.8 × 1.7-6.9 cm, segments again lobed, ultimate segments elliptic or oblong, margins crenate, apex rounded;

cauline leaf 0-1, scalelike.

Flowers

receptacle glabrous;

sepals spreading, yellow, 7-11 × 4-7 mm, glabrous;

petals 11-15, yellow, 8-12 × 3-5 mm.

Heads of achenes

hemispheric or spheric, 7-8 × 9-10 mm;

achenes 2.4-4.6 × 1.2-2.2 mm, glabrous;

beak persistent, filiform, hooked distally, 1-1.8 mm.

Tuberous

roots absent.

2n

= 16.

Ranunculus cooleyae

Ranunculus subg. Cyrtorhyncha
Phenology Flowering late spring–summer (Jun–Aug).
Habitat Slopes near persistent snowbanks
Elevation 500-1800 m (1600-5900 ft)
Distribution
from FNA
AK; WA; BC
[WildflowerSearch map]
Source FNA vol. 3. FNA vol. 3, p. 125.
Parent taxa Ranunculaceae > Ranunculus > subg. Cyrtorhyncha > sect. Arcteranthis Ranunculaceae > Ranunculus
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. 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. trilobus, R. triternatus, R. turneri, R. uncinatus
Subordinate taxa
Synonyms Arcteranthis cooleyae, Kumlienia cooleyae subg. Cyrtorhyncha
Name authority Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) (Nuttall) A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 1: 23. (1895)
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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