Al-Bermani, "Single-equation yield surfaces for
monosymmetric and asymmetric sections," Engineering Structures, vol.
However, asymmetric flowers--without a symmetry plane--are different from monosymmetric flowers.
Monosymmetric flowers with their single symmetry plane can be described as having two mirror symmetrical halves (divided by the symmetry plane) or as having two unequal sides (divided by a plane at right angles to the symmetry plane).
In monocots, the basalmost clade, Acorus, is
monosymmetric by a stronger development of the lower half of the flower (Buzgo & Endress, 2000).
Chasmogamous flowers, the subject of our study, are complex in form, nectarless,
monosymmetric, and consist of three blue and three showy, yellow stamens (Figs.
It was unexpected to find a family with highly elaborated, strongly
monosymmetric, or even asymmetric flowers that have a spur in Myrtales and, even more, as sister to Myrtaceae s.str., which have relatively unelaborated, polysymmetric flowers.
Pollen flowers with some feeding stamens and only a small number of larger pollinating stamens are characteristically arranged in two opposing groups in a
monosymmetric pattern (see Endress, 1999; Vogel, 1978).