spermatangium

[ spur-muh-tan-jee-uh m ]
/ ˌspɜr məˈtæn dʒi əm /

noun, plural sper·ma·tan·gi·a [spur-muh-tan-jee-uh] /ˌspɜr məˈtæn dʒi ə/.

the organ that produces spermatia in red algae.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019