Engelmann Daisy

The several stout stems of this perennial usually grow 2' tall and are branched above to form a rounded crown. Long-stalked, yellow, eight-petaled flowers open in late afternoon then fold under in intense heat and sunlight the next day.  Several flowers in eash cluster are about 1 1/2" across. The deeply cleft and toothed leaves are mostly basal, forming a large clump.