tetradynamous

Having six stamens, four of which are longer than the others, as in most plants of the mustard family.

Having six stamens, four longer arranged in opposite pairs, and two shorter, inserted lower down: a relation found only in the flowers of Cruciferæ. See cut under stamen.

Belonging to the order Tetradynamia; having six stamens, four of which are uniformly longer than the others.