Tansy Cinquefoil - Potentilla bipinnatifida
MNPS Threat Rank
Perennials from stout, branched caudex; stems 20-50 cm tall, erect or decumbent at base, pubescent with short and long hairs (spreading to ascending) or nearly glabrous. Petioles equaling or exceeding lenght of leaf blade. Basal leaves 10-25 cm, pinnate, often appearing digitate; leaflets 5-7(-9), crowded, up to 6 cm long by 3 cm wide, divided to nearly midrib, the segments 1.5-3.0 mm wide, greyish-green above and more or less pubescent (hairs long and short) or glabrous; lower surface whitish and tomentose with longer appressed (=sericeous) hairs or occasionally green and glabrous. Stem leaves similar to basal but short-petiolate. Inflorescnce open or congested, many-flowered. Flowers 6-10 mm diameter. Sepals 3-4 mm long, ovate, bractlets of epicalyx shorter and narrower than sepals. Petals obcordate to somewhat squarish, shorter than sepals, yellow. Achenes ca. 1 mm long (adapted from: Flora of Alberta, 1994, 2nd ed., revised).
MT east to MN, south to UT and CO (Kartesz in prep. 2012).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Dry prairies and open slopes (Flora of Alberta, 1994, 2nd ed., revised).
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.