Ranunculus hyperboreus Rottb.
far-northern buttercup (high northern buttercup)
Ranunculaceae (Buttercup family)
Introduction to Vascular Plants
far-northern buttercup (high northern buttercup)
Ranunculaceae (Buttercup family)
Introduction to Vascular Plants
Species Information
General:
Aquatic or amphibious, perennial herb, rooting from nodes, roots slender, fibrous; stems slender, floating or trailing, smooth.
Leaves:
Basal leaves absent; stem leaves kidney-shaped to broadly fan-shaped, deeply 3-lobed or 3-parted, 0.3-1.2 cm long, 0.5-2 cm wide, bases blunt to heart-shaped, the lobes undivided or the lateral cleft, the terminal segment entire or with small round teeth near tip, tips rounded; long-stalked; smooth.
Flowers:
Inflorescence of solitary terminal and axillary flowers, long-stalked; receptacle smooth; petals 3 or 4, distinct, yellow, 2-4 mm long, 1-3 mm wide, egg-shaped, nectary on upper surface, the nectary scale partially covering nectary; sepals 3 or 4, spreading or bent back from base, 2-4 mm long, 1-3 mm wide, smooth; stamens 10-20; pistils 10-70.
Fruits:
Achenes, several in a globe- to short egg-shaped head 3-5 mm long, 2-5 mm wide, the achenes egg-shaped, slightly flattened, 1-1.4 mm long, 0.8-1.2 mm wide, smooth; beaks persistent, curved, 0.1-0.4 mm long.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
USDA Species Characteristics
Ecology
Ecological Framework for Ranunculus hyperboreus
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
| Site Information |
Value / Class |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
657 | 30 | 1310 |
| Slope
Gradient (%) |
3 | 0 | 12 |
|
Aspect (degrees) |
45 | 45 | 45 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
5 | 3 | 7 |
| Modal
Nutrient Regime
Class |
A | ||
| #
of field plots species was recorded in: |
4 | ||
| Modal
BEC Zone Class |
CWH | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BWBS(1), CWH(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Ponds, muddy shores, and mossy seepage sites in thickets and forests in the montane zone; frequent in N BC, rare southward to 53degreeN, circumpolar, N to AK, YT and NT, E to Labr. and PQ and S to CO; Greenland, Iceland, N Eurasia.Status Information
Synonyms
Synonyms and Alternate Names:
Ranunculus hyperboreus subsp. arnellii Scheutz
Ranunculus hyperboreus subsp. hyperboreus
Ranunculus hyperboreus subsp. intertextus (Greene) Kapoor & A. Löve & D. Löve
Ranunculus hyperboreus subsp. turquetilianus
Ranunculus hyperboreus var. intertextus (Greene) B. Boivin
Ranunculus hyperboreus var. tuquetilianus Polunin p.p.
Ranunculus intertextus Greene
Ranunculus natans var. intertextus (Greene) L.D. Benson