A Maurer rose is a plot of a ``walk'' along an - (or -) leafed Rose in steps of a fixed number degrees,
including all cosets.
See also Starr Rose
References
Maurer, P. ``A Rose is a Rose...'' Amer. Math. Monthly 94, 631-645, 1987.
Wagon, S. Mathematica in Action. New York: W. H. Freeman, pp. 96-102, 1991.