lemma sterile lemma An undeveloped androecium or gynoecium may or may not be detectable. If you are annotating to this structure for Zea mays or other grasses, please also add an annotation to the corresponding spikelet type, if known. Choose the most specific term possible from: ear spikelet (PO:0006320), ear pedicellate spikelet (PO:0006348), ear sessile spikelet (PO:0006349), tassel spikelet (PO:0006309), tassel pedicellate spikelet (PO:0006312), tassel sessile spikelet (PO:0006311). 不稔外頴 (Japanese, exact) PO:0009040 lemma est&#233ril (Spanish, exact) PO:0006029 A flower bract in the position of a lemma, but not enclosing floral organs. empty glume (related) plant_anatomy