x
uploads/megasporangium.jpg

megasporangium n.(pl. -gia ) 【植物;植物學】大孢子囊。

megaspore

The plant body resembled a fern and did not produce flowers , the seeds developing from megasporangia borne on the margins of the fronds 在石炭紀該種植物生長繁茂,到白堊紀基本滅絕,目前僅保留有化石植物。