Having six stamens, the male reproductive parts of a flower.
From Greek 'hexa-' (six) and botanical 'stemonous' (having stamens, from 'stemon' meaning thread or stamen). Established botanical terminology.
The number and arrangement of stamens is so important to plant classification that scientists developed precise terms for each count—mustard plants famously have exactly six stamens, which is one reason they're called Hexapoda!
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