Potentilla rivalis Nutt.
brook cinquefoil
Rosaceae (Rose family)
Introduction to Vascular Plants
brook cinquefoil
Rosaceae (Rose family)
Introduction to Vascular Plants
Species Information
General:
Annual to biennial herb from a taproot; stems slender, spreading to ascending, 10-50 cm long/tall, freely branched, leafy, finely spreading- to appressed-hairy or woolly.
Leaves:
Basal leaves few, stalked, palmately compound; leaflets 5, oval to lance-oblong, 1-5 cm long, coarse-toothed, fine-hairy; stem leaves alternate, several, the lower similar to the basal but the upper usually with 3 leaflets.
Flowers:
Inflorescence a spreading, leafy-bracted, terminal cluster of many stalked flowers; corollas yellow, cup-shaped, the petals 5, spoon-shaped, about 2 mm long, about 1/2 the length of the calyx-lobes; calyces soft-hairy, 5-lobed, the lobes triangular-egg-shaped, alternating with 5 longer narrower bractlets; ovaries superior, the styles thickened at the base; stamens 5-15.
Fruits:
Achenes, numerous, clustered, lopsided-egg-shaped, about 0.7 mm long, yellowish-brown, smooth or slightly wrinkled.
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
Ecology
Ecological Framework for Potentilla rivalis
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) |
1020 | 1020 | 1020 |
| Slope
Gradient (%) |
0 | 0 | 0 |
|
Aspect (degrees) |
0 | ||
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
6 | 6 | 6 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
1 | ||
| Modal
BEC Zone Class |
SBPS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
SBPS(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist to wet meadows, streambanks, lakeshores, ditches and edges of wetlands in the lowland and montane zones; infrequent in S BC east of the Coast-Cascade Mountains, rare in SW BC (where introduced); E to SK and S to MN, MO, NM and CA.Status Information
Synonyms
Synonyms and Alternate Names:
Potentilla leucocarpa Rydb.
Potentilla millegrana Engelm. ex Lehm.
Potentilla pentandra Engelm.
Potentilla rivalis var. millegrana (Engelm. ex Lehm.) S. Wats.
Potentilla rivalis var. pentandra (Engelm.) S. Wats.
Potentilla rivalis var. rivalis Nutt. [superfluous autonym]