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Oregon Checker-mallow is an herbaceous perennial with erect stems that are 2-15 dm tall and arising from a branched rootcrown that surmounts a taproot. The basal leaves have long petioles and round blades that are deeply palmately divided into 5-9 nearly linear lobes. The alternate stem leaves become smaller with few lobes upward. The lower stems and leaves are sparsely covered with star-shaped ...