Ranunculus cooleyae |
Ranunculus turneri |
|
---|---|---|
Cooley's buttercup |
turner's buttercup |
|
Roots | never tuberous. |
|
Stems | erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
erect, never rooting nodally, hirsute, base not bulbous. |
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. |
blades cordate to reniform in outline, 3-parted, 1.3-3 × 1.8-3.8 cm, segments cleft, ultimate segments elliptic to lanceolate, margins toothed, apex acute. |
Flowers | receptacle glabrous; sepals spreading, yellow, 7-11 × 4-7 mm, glabrous; petals 11-15, yellow, 8-12 × 3-5 mm. |
receptacle glabrous; sepals spreading, 7-9 × 2-4 mm, hirsute; petals 5, yellow, 10-15 × 8-11 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. |
nearly globose, 7-10 mm wide; achenes 2.4 × 2.6-2.7 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, lanceolate, strongly hooked or curved, 1.6-2 mm. |
Tuberous | roots absent. |
|
2n | = 16. |
|
Ranunculus cooleyae |
Ranunculus turneri |
|
Phenology | Flowering late spring–summer (Jun–Aug). | Flowering summer (Aug). |
Habitat | Slopes near persistent snowbanks | Damp meadows |
Elevation | 500-1800 m (1600-5900 ft) | 0 m (0 ft) |
Distribution |
AK; WA; BC
|
AK; NT; YT; Asia |
Discussion | Of conservation concern. Ranunculus turneri was considered an arctic race of R. acris by E. Hultén (1971). It occurs from the Mackenzie Delta to northeastern Alaska. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Cyrtorhyncha > sect. Arcteranthis | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Ranunculus |
Sibling taxa | ||
Synonyms | Arcteranthis cooleyae, Kumlienia cooleyae | R. occidentalis var. turneri |
Name authority | Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) | Greene: Pittonia 2: 296. (1892) |
Web links |