hīˈmēnēəm noun
( plural hyme·nia -nēə ; or hymeniums )
Etymology: New Latin, from hymen- + -ium
: a spore-bearing layer in fungi or their fruiting bodies (as apothecia or the sporophores of agarics) consisting of a group of asci or basidia often interspersed with paraphyses, setae, and other sterile structures