part_of part of part of cardinal organ part sporangium sporangium base A cardinal organ part that is the basal (distal) part of a sporangium. 2011-04-12T11:57:20Z PO:0030040 PO_GIT:308 ISBN:0962073342 Term used for bryophytes and pteridophytes. The sporangium base is the sterile part of the sporangium below the sporangium theca. If swollen and distinct from the rest of the sporangium, it is called an apophysis or hypophysis. rwalls 胞子嚢基部 (Japanese, exact) apophysis (narrow) plant_anatomy base del esporangio (Spanish, exact) hypophysis (narrow) sporangium neck (exact)