In botany, describing flowers where the sepals are arranged alternately with the petals rather than directly behind them.
From Latin 'alternare' (to alternate) plus 'sepalum' (sepal), forming a technical botanical term for this specific floral arrangement.
The alternisepalous arrangement is another example of how flowers evolved to be more efficient—by having sepals positioned between petals, flowers protect their reproductive organs better while still allowing pollinator access.
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