E-Flora BC: Electronic Atlas of the Flora of British Columbia

Potentilla bipinnatifida Douglas ex Hook.
bipinnate cinquefoil (tansy cinquefoil)
Rosaceae (Rose family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #24973)

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Distribution of Potentilla bipinnatifida
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Species Information

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General:
Perennial herb from stout branched stem-base; stems slender, 1 to several, tufted, erect or decumbent at the base, 20-50 cm tall, usually with short and long, spreading or ascending hairs.
Leaves:
Basal leaves stalked, pinnately compound but sometimes appearing palmate; leaflets 5 to 7 (9), crowded, oblong to lanceolate, 1-6 cm long, cleft nearly to the midrib into linear-oblong lobes, grey-green and sparsely to densely hairy on the upper surface, white-woolly overlain with long-silky hairs or occasionally nearly smooth and greenish beneath; stem leaves alternate, similar but short-stalked, 2 to 4, reduced upward.
Flowers:
Inflorescence an open to compact and narrow, terminal cluster of several to many stalked flowers; corollas yellow, bowl-shaped, the petals 5, heart-shaped, 2-3 mm long; calyces woolly- to appressed-hairy and more or less glandular, 5-lobed, the lobes egg-shaped, 3-4 mm long, alternating with 5 shorter, lance-oblong bractlets; ovaries superior, the styles glandular-warty-thickened at the base; stamens usually 20.
Fruits:
Achenes, numerous, clustered, lopsided-egg-shaped, about 1 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist meadows, grassy slopes, alkali flats and lake margins in the steppe and montane zones; infrequent in BC east of the Coast-Cascade Mountains; N to AK, YT and NT, E to NF and S to CA, NM, IN and NH.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Potentilla bipinnatifida

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

Minimum

Average

Maximum

Elevation (metres) 660 817 900
Slope Gradient (%) 9 20 34
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
12 271 329
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 0 2
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
4
Modal BEC Zone Class
BG
All BEC Zones (# of stations/zone) species was recorded in: BG(3), PP(1)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Potentilla bipinnatifida var. bipinnatifida
Potentilla finitima Kohli & Packer
Potentilla pensylvanica var. arida B. Boivin
Potentilla pensylvanica var. bipinnatifida (Douglas ex Hook.) Torr. & A. Gray

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References