Ranunculus pallasii |
Ranunculus sabinei |
|
---|---|---|
Pallas' buttercup, renoncule de Pallas |
Sabine buttercup |
|
Roots | slender, 0.3-0.8 mm thick. |
|
Stems | creeping or floating, rooting nodally, glabrous, not bulbous-based. |
erect or decumbent, 1-12 cm, sparsely pilose, each with 1-3 flowers. |
Basal leaves | persistent, blades broadly obovate to transversely elliptic, 3-lobed or -parted, 0.9-3 × 0.8-3.4 cm, segments undivided or again lobed, base obtuse, margins entire, apices of segments rounded to rounded-obtuse. |
|
Basal leaf blades | linear to obovate, undivided or 3-lobed, 1.5-3.6 × 0.3-2 cm, lobes lanceolate or elliptic, margins entire, apex rounded to acuminate. |
|
Flowers | receptacle glabrous; sepals spreading, 6-10 × 4-7 mm, glabrous; petals 7-11, white or pink, 8-13 × 3-6 mm. |
pedicels pilose; receptacle pilose; sepals 4-7 × 2-3 mm, abaxially pilose, hairs colorless; petals 5, 5-8 × 3-4 mm; nectary scale glabrous. |
Heads of achenes | globose or hemispheric, 5-12 × 9-15 mm; achenes 4.2-5.2 × 2.4-3.2 mm, glabrous; beak persistent, lanceolate, straight or curved, 1-1.2 mm. |
cylindric, 6-9 × 4 mm; achenes 1.2-1.4 × 0.8-1 mm, glabrous; beak lance-subulate, straight or curved, 0.4-0.6 mm. |
Tuberous | roots absent. |
|
2n | = 32. |
= 64. |
Ranunculus pallasii |
Ranunculus sabinei |
|
Phenology | Flowering summer (Jul–Aug). | Flowering summer (Jul–Aug). |
Habitat | Shallow water of bogs and pools in muskeg and tundra | Slopes and hummocks in tundra, in sandy or gravelly soil |
Elevation | 0-700 m (0-2300 ft) | 0 m (0 ft) |
Distribution |
AK; MB; NF; NT; ON; QC; YT; Eurasia |
AK; NT; YT; Greenland |
Discussion | An alternative interpretation of this taxon is given by E. Hultén (1971) who considered it to be the hybrid Ranunculus nivalis × R. pygmaeus, and considered all specimens referable here to be hybrids or members of stabilized populations of hybrid origin. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Pallasiantha | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes |
Sibling taxa | ||
Synonyms | R. pygmaeus subsp. sabinei | |
Name authority | Schlechtendal: Animadv. Bot. Ranunc. Cand. 1: 15. (1819) | R. Brown: J. Voy. N.-W. Passage, Bot., 264. (1824) |
Web links |