Pycnanthemum virginianum
An erect, many-branched, herbaceous perennial that grows 2-3' tall and features narrow, toothless, tapering leaves and profuse, somewhat flat-topped, terminal clusters of small, white, 2-lipped flowers which bloom in mid to late summer. All parts of the plant emit a strong, mint-like aroma when crushed. Pycnanthemums have been used in teas.