spermatium

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A nonmotile cell in red algae and certain lichens and fungi that functions as a male gamete.

Century Dictionary and Cyclopedia

1. n. In botany, an exceedingly minute cylindrical or rod-shaped body in fungi, produced like spores in cup-like organs called spermogonia. The spermatia are conjectured to be the male fertilizing organs, although the male sexual function of all spermatia in fungi has not been demonstrated. In more technical language a spermatium is a “male non-motile gamete conjugating with the trichogyne of a procarp” (Goebel).

Wiktionary

1. n. One of the motionless spermatozoids in the conceptacles of certain fungi.

GNU Webster's 1913

1. n. (Bot.) One of the motionless spermatozoids in the conceptacles of certain fungi.