Category: T

With four complete sets of chromosomes. Twice the usual number (diploid) of chromosomes. Concerning tetraploidy, the state of having twice the diploid number of chromosomes.  

With four angles.  

With four stamens.  

(Of a flower) with the constituent parts in whorls of four. With four members, the flower parts in four.  

Shaped like a tetrahedon, with four faces, each face triangular; pyramidal.  

Shaped like an equal-sided pyramid.  

Four-angled.  

With four angles in cross-section.  

With four long stamens and two short ones (as in Cruciferae/Brassicaceae). When having six stamens, two of them shorter than the rest.  

Group of four pollen grains (formed from a single pollen mother-cell) that are released from the anther as one unit (e.g. in Drosera). A cluster of four pollen grains released from the anther as a single unit. A group of four spores formed from a spore mother cell after meiosis. The four cells resulting from…