Ranunculus cooleyae |
Ranunculus macranthus |
|
---|---|---|
Cooley's buttercup |
large buttercup, showy buttercup, smallflower buttercup |
|
Roots | tuberous. |
|
Stems | erect from short caudices, not rooting nodally, glabrous, not bulbous-based. |
erect or decumbent, never rooting nodally, hispid, 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 ovate in outline, 3-5-foliolate, 3.8-10 × 2.7-9 cm, leaflets 1x-lobed, ultimate segments narrowly elliptic to oblanceolate, margins entire or with few teeth, apex broadly acute to rounded-obtuse. |
Flowers | receptacle glabrous; sepals spreading, yellow, 7-11 × 4-7 mm, glabrous; petals 11-15, yellow, 8-12 × 3-5 mm. |
receptacle hispid; sepals spreading or weakly reflexed ca. 1 mm above base, 7-10 × 3-5 mm, hispid; petals 10-22, yellow, 12-22 × 4-9 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. |
globose to cylindric, 8-14 × 8-10 mm; achenes 2.2-4.2 × 2.8-3.4 mm, glabrous, margin forming narrow rib 0.4-0.6 mm wide; beak usually persistent, filiform from deltate base, straight, 2-4 mm. |
Tuberous | roots absent. |
|
2n | = 16. |
= 32. |
Ranunculus cooleyae |
Ranunculus macranthus |
|
Phenology | Flowering late spring–summer (Jun–Aug). | Flowering late winter–spring (Mar–May). |
Habitat | Slopes near persistent snowbanks | Riverbanks and wet meadows |
Elevation | 500-1800 m (1600-5900 ft) | 0-400 m (0-1300 ft) |
Distribution |
AK; WA; BC
|
TX
|
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. fascicularis var. cuneiformis |
Name authority | Vasey & Rose ex Rose: Contr. U.S. Natl. Herb. 1: 289. (1894) | Scheele: Linnaea 21: 585. (1848) |
Web links |