pollen sac

noun

, Botany.

1. one of the cavities in an anther in which pollen is produced.

pollen sac

1. The microsporangium of a seed plant in which pollen is produced. The pollen sacs of angiosperms are located in the anthers, while those of conifers are located in the male cones.

Word History and Origins

Origin of pollen sac¹

First recorded in 1870–75

Example Sentences

The wall of the ripe sporangium or pollen sac is composed of a single layer of cells in most places, and these cells are provided with thickened ridges which have to do with opening the pollen sac.

From Project Gutenberg

This drawing together is produced by a small weal, which appears as a more or less complete pollen sac, and in the same proportion the leaf approaches the simple form of a stamen.

From Project Gutenberg

A true, little-modified petal is drawn together on its upper margin, and produces a pollen sac, while the rest of the petal takes the place of the stamen.

From Project Gutenberg