Ranunculus pallasii |
Ranunculus micranthus |
|
---|---|---|
Pallas' buttercup, renoncule de Pallas |
rock buttercup, small-flower crowfoot |
|
Roots | dimorphic, some filiform, 0.2-0.6 mm thick and some with tuberous bases 1-2 mm thick. |
|
Stems | creeping or floating, rooting nodally, glabrous, not bulbous-based. |
erect, 11-40 cm, villous, each with 8-35 flowers. |
Basal leaves | persistent, blades ovate, orbiculate, or transversely elliptic, outer blades undivided, inner 3-parted or 3-foliolate, 1-3.3 × 1-3 cm, base truncate to broadly obtuse or sometimes weakly cordate, margins crenate, apex 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 glabrous or villous; receptacle glabrous; sepals 2-4 × 1-1.5 mm, abaxially glabrous or pubescent, hairs colorless; petals 5, 1.5-3.5 × 0.5-1.5 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. |
globose to cylindric, 3-7 × 2-4 mm; achenes 1.1-1.5 × 1-1.3 mm, glabrous; beak subulate, straight or curved, 0.2-0.3 mm. |
Tuberous | roots absent. |
|
2n | = 32. |
= 16. |
Ranunculus pallasii |
Ranunculus micranthus |
|
Phenology | Flowering summer (Jul–Aug). | Flowering spring (Mar–May). |
Habitat | Shallow water of bogs and pools in muskeg and tundra | Woods, meadows, and clearings |
Elevation | 0-700 m (0-2300 ft) | 0-1000 m (0-3300 ft) |
Distribution |
AK; MB; NF; NT; ON; QC; YT; Eurasia |
AL; AR; CT; DC; IL; IN; KS; KY; MA; MD; MO; MS; NC; NJ; NY; OH; OK; PA; SD; TN; VA; WV
|
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Ranunculus > subg. Pallasiantha | Ranunculaceae > Ranunculus > subg. Ranunculus > sect. Epirotes |
Sibling taxa | ||
Synonyms | R. micranthus var. cymbalistes, R. micranthus var. delitescens | |
Name authority | Schlechtendal: Animadv. Bot. Ranunc. Cand. 1: 15. (1819) | Nuttall: in J. Torrey and A. Gray, Fl. N. Amer. 1: 18. (1838) |
Web links |