A botanical classification describing flowering plants with four stamens of two different lengths, typically arranged in two pairs.
From Greek 'di-' (two) plus 'dynamis' (power or strength), describing flowers with two pairs of different-length stamens; used in Linnaeus's sexual classification of plants.
Linnaeus classified thousands of plants using stamen count and arrangement—'didynamia' plants have four stamens of two different sizes, a quirk of plant sexuality that helped him organize the botanical world before DNA was even imagined.
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