Didynamia
plural noun
Di·dy·na·mia
ˌdīdə̇ˈnāmēə
in former classifications
: a class of plants including those having flowers with four stamens disposed in pairs of unequal length
didynamian
adjective
¦⸗⸗¦nāmēən
or didynamic
-¦namik
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Merriam-Webster unabridged
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