Heterosporeae
plural noun
Het·er·o·spo·re·ae
ˌhetərōˈspōrēˌē
in some classifications
: a primary subdivision of Pteridophyta including the Lycopodiaceae and Equisetaceae and producing two kinds of asexual spores
Word History
Etymology
New Latin, from heter- + -sporeae (from Greek spora seed)