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Download Sulphur Cinquefoil (Poten lla recta)
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Sulphur Cinquefoil (Potenlla recta) SC POTE REC Erect, long-lived perennial 0.3 to 0.8 metres tall. Older plants o!en form a ringshaped clump as old roots die in the center and new shoots grow on the outside edges. Na"ve to Eurasia. Distribu!on Found throughout the Southern Interior. Quick ID “Look-Alike” Species Many na"ve cinquefoils, such as Potenlla gracilis, appear similar but Long, s"ff hairs perpendicular to stem. Sulphur cinquefoil can be dis"nguished by long, right Rela"vely few leaves at plant base. angled hairs; numerous Underside of leaf is green, not silver. stem leaves Palmate leaves. but few basal leaves; and leaves that Interes!ng Facts: appear green Unpalatable to grazing animals due to on the high tannin content. underside. Pale yellow flower with 5 petals. 66 Invasive Plants of the Southern Interior Manual Treatment: Although primarily a seed producer, simply elimina"ng seed produc"on is not very effec"ve in reducing or elimina"ng sulphur cinquefoil infesta"ons. Plants are able to perpetuate by vegeta"ve growth and con"nue to slowly spread. Hand-pulling is effec"ve on small infesta"ons provided the en"re root is removed. Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Flowers: Pale yellow flowers, 1.3 to 2.5 cm in diameter, five heart-shaped petals; bright yellow centers. Contain 25 to 30 stamens. Found on top of stems. Leaves and Stems: A rose&e on long-stalked leaves develops first and withers before flowering. Stems and leaves are covered with long, coarse, shiny hairs at right angles. Stem leaves are alternate, green on the underside, and composed of 5 to 7 leaflets with toothed margins. Leaflets appear like marijuana leaves (palmately compound). Seeds: Oval shaped dark brown seeds covered with net-like ridges. Roots: Woody taproot may have several spreading roots or stolons, but no rhizomes. Reproduc!on and Dispersal: Primarily by seed. Most seeds fall near parent plant and disperse greater distances with water, soil movement, human ac"vi"es and animals. Seeds survive three years or longer. Habitat Preference: Disturbed areas, grasslands, open forests, shrubby areas, roadsides and fields. Can invade healthy plant communi"es but does not tolerate full shade. Associated with knapweed infesta"ons. Invasive Plants of the Southern Interior 67