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Meaning of QUINCUNCIAL

 
Webster's 1913 Dictionary
 
 Definition: 
\Quin*cun"cial\, [L. quincuncialis, from quincunx.
See {Quincunx}.]
1. Having the form of a quincunx.

2. (Bot.) 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 [ae]stivation.

{Quincuncial phyllotaxy} (Bot.), an arrangement of five
   leaves in a spiral, each leaf two fifths of a circle from
   the next.

 
Biology Dictionary
 
 Definition: Of the arrangement of corolla lobes in a bud, a variant of imbricate aestivation.
 

 

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