If you are annotating to this structure 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), ear floret (PO:0006354), upper floret of pedicellate spikelet of ear (PO:0006350), upper floret of sessile spikelet of ear (PO:0006352).

If you are annotating to this structure 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), ear floret (PO:0006354), upper floret of pedicellate spikelet of ear (PO:0006350), upper floret of sessile spikelet of ear (PO:0006352).

PO:0006494

PO:0006464

FNA:6e5937eb-f512-4bd3-9865-06606218863f

The larger, in general, of the two kinds of spores produced after meiosis in the life cycle of a heterosporous plant, and on germination giving rise to the female gametophyte (embryo sac).

PO:0020019

megaspora (Spanish, exact)

大胞子 (Japanese, exact)

plant_anatomy

macrospore (related)

PO:0020019

megaspore

Zea megaspore (narrow)

Poaceae megaspore (narrow)