Plant monoecious: staminate flowers on obovoid or club-shaped stiff spikes, 1.5-2 cm long; pistilate flowers in a dense 雌雄同株：雄花序倒卵形或棒状，长1.5-2厘米；雌花序圆头状。
Neocallimastix sp.is monocentrie and has a globose sporangium with polyflagcllate zoospores born on a muchbranched main Neocallimastix sp。