Plant monoecious: staminate flowers on obovoid or club-shaped stiff spikes, 1.5-2 cm long; pistilate flowers in a dense globose head.
Plant monoecious: staminate flowers on obovoid or club-shaped stiff spikes, 1.5-2 cm long; pistilate flowers in a dense globose head.
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。