01 Having the form of a quincunx.
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1.
Having the form of a quincunx.
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2.
Having the leaves of a pentamerous calyx or corolla so imbricated that two are exterior, two are interior, and the other has one edge exterior and one interior; as, quincuncial æstivation.(Bot.)
Phrases & compounds
Quincuncial phyllotaxy —
an arrangement of five leaves in a spiral, each leaf two fifths of a circle from the next.