subject | relation | object |
---|---|---|
microsporangium exothecium | is_a | exothecium (PO:0030073) |
microsporangium exothecium | BFO:0000050 | microsporangium wall (PO:0025307) |
subject | relation | object |
---|---|---|
anther wall exothecium (PO:0020004) | is_a | microsporangium exothecium |