- plant anatomy
- exact: 造卵器腹部 (Japanese)
- exact: vientre (Spanish)
- A cardinal organ part (PO:0025001) that is the enlarged basal part of an archegonium (PO:0025126) and has an archegonium egg cell (PO:0025122) located in it. [source: ISBN:0962073342]
- After fertilization, the venter develops into the spore capsule calyptra (PO:0030037), which protects the sporangium (syn: spore capsule; PO:0025094) containing the developing sporophyte.
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