Invasive Species: Myriophyllum heterophyllum, Variable Watermilfoil
Variable watermilfoil is an invasiveĀ perennial aquatic herb that has leaves of two noticeably different forms. The submerged leaves are finely dissected, whorled, reddish/greenish-brown, and 1/2 to 2 1/2 in. (1.3 to 6.4 …