part_of part of part of has part has part has_part develops_from develops from anther primordium stamen anther Zea anther (narrow) Poaceae anther (narrow) PO:0006473 plant_anatomy Generally consists of four pollen sacs (microsporangia) in two anther thecas. If you are annotating to anther or one of its parts for Zea mays or other grasses, please also add an annotation to the corresponding floret type. Choose the most specific term possible from: spikelet floret (PO:0009082), tassel floret (PO:0006310), lower floret of pedicellate spikelet of tassel (PO:0006313), lower floret of sessile spikelet of tassel (PO:0006315), upper floret of pedicellate spikelet of tassel (PO:0006314), upper floret of sessile spikelet of tassel (PO:0006316). PO_GIT:297 PO:0006442 半葯,花粉のう (Japanese, exact) PO:0009066 PO_GIT:70 antera (Spanish, exact) A collective plant organ structure (PO:0025007) that is the pollen-bearing part of a stamen (PO:0009029). collective plant organ structure pollen sac anatomical entity