A parametric rose is one surface wound nearly thirteen times about an axis, θ running from −5π/3 to 24π and x ∈ [0, 1] running out along each petal. The opening angle φ = (π/2)e^(−θ/8π) falls from 111° on the drooping outer petals to 4.5° at the bud. X = 1 − ½(5/4(1 − (3.6θ