Ranunculus pallasii |
Ranunculus laxicaulis |
|
---|---|---|
Pallas' buttercup, renoncule de Pallas |
Mississippi buttercup |
|
Roots | not thickened basally, glabrous. |
|
Stems | creeping or floating, rooting nodally, glabrous, not bulbous-based. |
erect or ascending, often rooting at proximal nodes, glabrous or sparsely pilose. |
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. |
|
Proximal cauline leaf blades | ovate to lanceolate or narrowly elliptic, 1.5-5.7 × 0.4-2.4 cm, base cordate to acute, margins finely denticulate or entire, apex broadly rounded to acuminate. |
|
Inflorescences | bracts linear to lanceolate or oblanceolate. |
|
Flowers | receptacle glabrous; sepals spreading, 6-10 × 4-7 mm, glabrous; petals 7-11, white or pink, 8-13 × 3-6 mm. |
receptacle glabrous; sepals 4-5, spreading or reflexed from base, 2-3 × 1.5-3 mm, glabrous or pubescent; petals 4-6, 2-6 × 1-2 mm; nectary scales 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. |
hemispheric to ovoid, 2-4 × 2-3 mm; achenes 0.8-1 × 0.8 mm, glabrous; beak deciduous, leaving stump 0.1-0.2 mm. |
Tuberous | roots absent. |
|
2n | = 32. |
|
Ranunculus pallasii |
Ranunculus laxicaulis |
|
Phenology | Flowering summer (Jul–Aug). | Flowering late winter–summer (Mar–Jul). |
Habitat | Shallow water of bogs and pools in muskeg and tundra | Around ponds and ditches, in meadows, roadsides, and open woods |
Elevation | 0-700 m (0-2300 ft) | 0-100 m (0-300 ft) |
Distribution |
AK; MB; NF; NT; ON; QC; YT; Eurasia |
AL; AR; DE; GA; IL; IN; KS; KY; LA; MD; MO; MS; NC; NJ; OK; SC; TN; TX; VA
|
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Pallasiantha | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Flammula |
Sibling taxa | ||
Synonyms | R. mississippiensis, R. subcordatus, R. texensis | |
Name authority | Schlechtendal: Animadv. Bot. Ranunc. Cand. 1: 15. (1819) | Darby: Man. Bot. 2: 4. (1841) |
Web links |