sulphur cinquefoil

Rosales > Rosaceae > Potentilla recta L.
Synonym(s): roughfruit cinquefoil

Sulphur cinquefoil is a perennial herb that can grow to 19.7 in. (50 cm) tall. A loose rosette of long-petiolate leaves develops first and withers before flowering. Plants can be one or multi-stemmed. Stems are covered with long and short hairs and are unbranched (branched only in the inflorescence). Cauline (stem) leaves are palmately compound (with 5-7 leaflets), stipulate and short petioled to sessile. The central leaflet is 1.2-5.9 in. (3-15 cm) long (longer than the other leaflets). Flowering occurs from May to July, when sulfur yellow flowers develop in open, flat-topped inflorescences at the apex of the stems. Flowers have 5 petals, each 0.2-0.4 in. (6-9 mm) long, and 25-30 stamens. Fruits are small, dark brown achenes with pale veins. Sulphur cinquefoil is native to Europe and occurs in pastures, rangelands, along roadsides and other disturbed sites.


Identification, Biology, Control and Management Resources


Selected Images from Invasive.org

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Feature(s); Stem
Steve Dewey, Utah State University, Bugwood.org
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Feature(s); Stem
Steve Dewey, Utah State University, Bugwood.org
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Flower(s);
USDA ARS Archive, USDA Agricultural Research Service, Bugwood.org
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Fruit(s); fruit and seeds
Ken Chamberlain, The Ohio State University, Bugwood.org
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Plant(s);
Steve Dewey, Utah State University, Bugwood.org
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Infestation;
Steve Dewey, Utah State University, Bugwood.org
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Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
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Diagram or Graphic; Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 2: 254.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
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Invasive Reference(s):

Check Invasive.org for most current lists.
  • Colorado - Noxious Weed Law
  • Kentucky - EPPC List
  • Montana - Noxious Weed Law
  • Nevada - Noxious Weed Law
  • Oregon - Noxious Weed Law
  • Washington - Noxious Weed Law
  • Mid-Atlantic - EPPC List
  • Invasive Plants: Western North America
  • Invasive Plants of the Upper Midwest


External Links


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