sulfur cinquefoil USDA PLANTS SYMBOL: PORE5
Potentilla recta L.
Synonym(s): sulphur cinquefoil, roughfruit cinquefoil

Appearance
Potentilla recta is a perennial herb that can grow to 19.7 in. (50 cm) tall. It is native to Africa, temperate Asia and Europe.
Foliage
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. Cauline 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).
Flowers
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. (0.5-1 cm) long, and 25-30 stamens.
Fruit
Fruits are small, dark brown achenes with pale veins. Seeds often have a webbed or net-like pattern on them.
Ecological Threat
P. recta occurs in pastures, rangelands, along roadsides and other disturbed sites. NOTE: The native graceful or slender cinquefoil, P. gracilis has short hairs that lie flat on the stems and leaves and brighter yellow flowers than the invasive P. recta.

Identification, Biology, Control and Management Resources