Quincuncial
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Having the leaves of a pentamerous calyx or corolla soimbricated that two are exterior, two are interior, and the other hasone edge exterior and one interior; as, quincuncial æstivation.Quincuncial phyllotaxy (Bot.), an arrangement of five leaves in aspiral, each leaf two fifths of a circle from the next.
Quincuncial meaning & definition 1 of Quincuncial.